Month: February 2023

Ham, Young Jin et al. published their research in Tetrahedron Letters in 2010 | CAS: 175137-21-0

4-Chloro-7-methylthieno[3,2-d]pyrimidine (cas: 175137-21-0) belongs to pyrimidine derivatives. Pyrimidine also found in many synthetic compounds such as barbiturates and the HIV drug, zidovudine. As nucleotides in DNA and RNA, pyrimidine nucleotide derivatives have a wide range of biological applications. For example, pyrimidine derivatives are useful in DNA repair studies involving cancer and epigenetics.Recommanded Product: 4-Chloro-7-methylthieno[3,2-d]pyrimidine

The efficient one-step chlorination of methylsulfanyl group on pyrimidine ring system with sulfuryl chloride was written by Ham, Young Jin;Lee, Duck-Hyung;Choi, Hwan Geun;Hah, Jung-Mi;Sim, Taebo. And the article was included in Tetrahedron Letters in 2010.Recommanded Product: 4-Chloro-7-methylthieno[3,2-d]pyrimidine This article mentions the following:

A facile one-step transformation of methylsulfanyl and arylsulfanyl groups on pyrimidine ring system into the corresponding chloride group was achieved using sulfuryl chloride in acetonitrile/dichloromethane. In the experiment, the researchers used many compounds, for example, 4-Chloro-7-methylthieno[3,2-d]pyrimidine (cas: 175137-21-0Recommanded Product: 4-Chloro-7-methylthieno[3,2-d]pyrimidine).

4-Chloro-7-methylthieno[3,2-d]pyrimidine (cas: 175137-21-0) belongs to pyrimidine derivatives. Pyrimidine also found in many synthetic compounds such as barbiturates and the HIV drug, zidovudine. As nucleotides in DNA and RNA, pyrimidine nucleotide derivatives have a wide range of biological applications. For example, pyrimidine derivatives are useful in DNA repair studies involving cancer and epigenetics.Recommanded Product: 4-Chloro-7-methylthieno[3,2-d]pyrimidine

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Cheng, Yu-Xiao et al. published their research in Water Research in 2021 | CAS: 1220-83-3

4-Amino-N-(6-methoxypyrimidin-4-yl)benzenesulfonamide (cas: 1220-83-3) belongs to pyrimidine derivatives. Pyrimidine also found in many synthetic compounds such as barbiturates and the HIV drug, zidovudine. A Cu-catalyzed and 4-HO-TEMPO-mediated [3 + 3] annulation of commercially available amidines with saturated ketones enables an efficient and facile synthesis of structurally important pyrimidines via a cascade reaction of oxidative dehydrogenation/annulation/oxidative aromatization.Safety of 4-Amino-N-(6-methoxypyrimidin-4-yl)benzenesulfonamide

Highly enhanced biodegradation of pharmaceutical and personal care products in a novel tidal flow constructed wetland with baffle and plants was written by Cheng, Yu-Xiao;Chen, Jun;Wu, Dan;Liu, You-Sheng;Yang, Yong-Qiang;He, Lu-Xi;Ye, Pu;Zhao, Jian-Liang;Liu, Shuang-Shuang;Yang, Bin;Ying, Guang-Guo. And the article was included in Water Research in 2021.Safety of 4-Amino-N-(6-methoxypyrimidin-4-yl)benzenesulfonamide This article mentions the following:

Research on decentralized wastewaters deserves special focus due to the potential abundance of emerging organic pollutants including pharmaceutical and personal care products (PPCPs), which might pose serious threats to the local water bodies and even to human health. Constructed wetland (CW) is a common decentralized wastewater treatment technol., with a certain ability to eliminate PPCPs. Nonetheless, PPCPs removal in common CWs is frequently challenging, besides, the removal mechanism remains elusive. Based on our previous study, tidal flow constructed wetlands (TFCWs) is effective in nitrogen removal. Here, 3 TFCWs with different modifications (baffle, plants, both baffle and plants) were constructed to treat raw domestic sewage and specifically to evaluate the removal efficiencies and mechanism of PPCPs. 24 PPCPs including 7 antibiotics, 8 steroid hormones and 9 biocides were detected in the level of 1.10 ± 0.29 ng/L-799 ± 10.6 ng/L in the influents. Consequently, we found that modification with both baffle and plants significantly influenced the removal of PPCPs. Moreover, the highest removal rates of biocides (97.1 ± 0.29%), steroid hormones (99.8 ± 0.02%), and antibiotics (90.2 ± 1.60%) were achieved via both baffles and plants in TFCWs. Based on the mass balance anal., microbial degradation dominated the removal of PPCPs with a percentage higher than 85.7%, followed by substrate adsorption (5.22 x 10-2-14.3%) and plant uptake (1.66 x 10-3-0.44%). Further, 16S rDNA sequencing anal. revealed that the presence of baffle and plants improve the removal efficiency of PPCPs by means of enhancing microbial diversity and changing dominant microorganisms. Moreover, Thaumarchaeota was potentially the key microorganism in the phylum level for PPCPs elimination by TFCWs through LEfSe (linear discriminant anal. (LDA) effect size) anal. These findings provide new insights into the removal of PPCPs in CWs. In the experiment, the researchers used many compounds, for example, 4-Amino-N-(6-methoxypyrimidin-4-yl)benzenesulfonamide (cas: 1220-83-3Safety of 4-Amino-N-(6-methoxypyrimidin-4-yl)benzenesulfonamide).

4-Amino-N-(6-methoxypyrimidin-4-yl)benzenesulfonamide (cas: 1220-83-3) belongs to pyrimidine derivatives. Pyrimidine also found in many synthetic compounds such as barbiturates and the HIV drug, zidovudine. A Cu-catalyzed and 4-HO-TEMPO-mediated [3 + 3] annulation of commercially available amidines with saturated ketones enables an efficient and facile synthesis of structurally important pyrimidines via a cascade reaction of oxidative dehydrogenation/annulation/oxidative aromatization.Safety of 4-Amino-N-(6-methoxypyrimidin-4-yl)benzenesulfonamide

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Tupitsyn, I. F. et al. published their research in Zhurnal Obshchei Khimii in 1992 | CAS: 37972-24-0

2-Ethynylpyrimidine (cas: 37972-24-0) belongs to pyrimidine derivatives. Pyrimidine also found in many synthetic compounds such as barbiturates and the HIV drug, zidovudine. Therapy for fungal infections is based mainly on four classes of antifungals: azoles, echinocandins, polyenes, and pyrimidine analogs.Safety of 2-Ethynylpyrimidine

Gas- and liquid-phase C-H acidity of terminal acetylenes was written by Tupitsyn, I. F.;Popov, A. S.;Shibaev, A. Yu.. And the article was included in Zhurnal Obshchei Khimii in 1992.Safety of 2-Ethynylpyrimidine This article mentions the following:

Both corrected AM1 and MINDO/3 methods constituted acceptable approximations for calculation of proton affinity of ethynyde carbanions. Decrease in heat of deprotonation along the series HnXCCH (X = 2nd period element C, N, O, F) testifies to the predominant role of electronegativity in C-H acidity; bond-length variations along this series, however, indicate repulsive interactions between the carbanion center and heteroatom. Carbanion stability increases (proton affinity decreases) upon 2nd- to 3rd row exchange, e.g., from H3CCC– to H3SiCC–; that this stabilization originates in dπ-conjugation is substantiated by decreasing Si-C bond length in the carbanion vs. acid. Heat of deprotonation decreases from HCCH to RCCH (R = aryl, N-containing heteroaryl) regardless of the degree of electron deficiency or electron excess in the ring. Correlations of heat of deprotonation with exptl. pKa (thermodn. acidity) and kD (kinetics of H-D exchange, as measure of kinetic acidity) were discussed. In the experiment, the researchers used many compounds, for example, 2-Ethynylpyrimidine (cas: 37972-24-0Safety of 2-Ethynylpyrimidine).

2-Ethynylpyrimidine (cas: 37972-24-0) belongs to pyrimidine derivatives. Pyrimidine also found in many synthetic compounds such as barbiturates and the HIV drug, zidovudine. Therapy for fungal infections is based mainly on four classes of antifungals: azoles, echinocandins, polyenes, and pyrimidine analogs.Safety of 2-Ethynylpyrimidine

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Yaziji, Vicente et al. published their research in Journal of Medicinal Chemistry in 2011 | CAS: 40230-24-8

4,6-Diphenylpyrimidin-2-amine (cas: 40230-24-8) belongs to pyrimidine derivatives. The pyrimidine derivatives can easily interact with enzymes, genetic materials, and bio components within the cell. Pyrimidine derivatives also play an important role in drug development, either in concert with other compounds or on their own.Formula: C16H13N3

Pyrimidine derivatives as potent and selective A3 adenosine receptor antagonists was written by Yaziji, Vicente;Rodriguez, David;Gutierrez-de-Teran, Hugo;Coelho, Alberto;Caamano, Olga;Garcia-Mera, Xerardo;Brea, Jose;Loza, Maria Isabel;Cadavid, Maria Isabel;Sotelo, Eddy. And the article was included in Journal of Medicinal Chemistry in 2011.Formula: C16H13N3 This article mentions the following:

Two regioisomeric series of diaryl 2- or 4-amidopyrimidines e. g. I, II have been synthesized and their adenosine receptor affinities were determined in radioligand binding assays at the four human adenosine receptors (hARs). Some of the ligands prepared herein exhibit remarkable affinities (Ki < 10 nm) and, most noticeably, the absence of activity at the A1, A2A, and A2B receptors. The structural determinants that support the affinity and selectivity profiles of the series were highlighted through an integrated computational approach, combining a 3D-QSAR model built on the second generation of GRid Independent Descriptors (GRIND2) with a novel homol. model of the hA3 receptor. The robustness of the computational model was subsequently evaluated by the design of new derivatives exploring the alkyl substituent of the exocyclic amide group. The synthesis and evaluation of the novel compounds validated the predictive power of the model, exhibiting excellent agreement between predicted and exptl. activities. In the experiment, the researchers used many compounds, for example, 4,6-Diphenylpyrimidin-2-amine (cas: 40230-24-8Formula: C16H13N3).

4,6-Diphenylpyrimidin-2-amine (cas: 40230-24-8) belongs to pyrimidine derivatives. The pyrimidine derivatives can easily interact with enzymes, genetic materials, and bio components within the cell. Pyrimidine derivatives also play an important role in drug development, either in concert with other compounds or on their own.Formula: C16H13N3

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Warczykowska, Iwona et al. published their research in Polish Journal of Chemistry in 1980 | CAS: 75833-38-4

2-Chloropyrimidine-4-carbonitrile (cas: 75833-38-4) belongs to pyrimidine derivatives. The pyrimidine nitrogenous bases are derived from the organic compound pyrimidine through the addition of various functional groups. We all know its importance to life – pyrimidine and purine bases are included in the structure of DNA and RNA.Formula: C5H2ClN3

Synthesis of new pyrimidine-4-carboxylic acid derivatives was written by Warczykowska, Iwona;Wojciechowski, Jan. And the article was included in Polish Journal of Chemistry in 1980.Formula: C5H2ClN3 This article mentions the following:

Aminolysis of 2-chloro-4-cyanopyridine (I) gave the nitriles II [R = cyano; R1 = H, R2 = 4-ClC6H4, 2-MeOC6H4, 4-Me2NC6H4; R1 = R2 = Et; R1R2 = (CH2CH2)2O] which were hydrolyzed with 5% aqueous NaOH to the acids II (R = CO2H). Treatment of I with NaOMe-MeOH gave the ester III which was hydrolyzed to the acid with aqueous NaOH. In the experiment, the researchers used many compounds, for example, 2-Chloropyrimidine-4-carbonitrile (cas: 75833-38-4Formula: C5H2ClN3).

2-Chloropyrimidine-4-carbonitrile (cas: 75833-38-4) belongs to pyrimidine derivatives. The pyrimidine nitrogenous bases are derived from the organic compound pyrimidine through the addition of various functional groups. We all know its importance to life – pyrimidine and purine bases are included in the structure of DNA and RNA.Formula: C5H2ClN3

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Petrocchi, Alessia et al. published their research in Bioorganic & Medicinal Chemistry Letters in 2016 | CAS: 20090-58-8

4-Chloro-5-methylpyrimidin-2-amine (cas: 20090-58-8) belongs to pyrimidine derivatives. The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives. As nucleotides in DNA and RNA, pyrimidine nucleotide derivatives have a wide range of biological applications. For example, pyrimidine derivatives are useful in DNA repair studies involving cancer and epigenetics.COA of Formula: C5H6ClN3

Identification of potent and selective MTH1 inhibitors was written by Petrocchi, Alessia;Leo, Elisabetta;Reyna, Naphtali J.;Hamilton, Matthew M.;Shi, Xi;Parker, Connor A.;Mseeh, Faika;Bardenhagen, Jennifer P.;Leonard, Paul;Cross, Jason B.;Huang, Sha;Jiang, Yongying;Cardozo, Mario;Draetta, Giulio;Marszalek, Joseph R.;Toniatti, Carlo;Jones, Philip;Lewis, Richard T.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2016.COA of Formula: C5H6ClN3 This article mentions the following:

Structure based design of a novel class of aminopyrimidine MTH1 (MutT homolog 1) inhibitors is described. Optimization led to identification of I, a sub-nanomolar inhibitor of MTH1 with excellent cell permeability and good metabolic stability in microsomes. This compound robustly inhibited MTH1 activity in cells and proved to be an excellent tool for interrogation of the utility of MTH1 inhibition in the context of oncol. In the experiment, the researchers used many compounds, for example, 4-Chloro-5-methylpyrimidin-2-amine (cas: 20090-58-8COA of Formula: C5H6ClN3).

4-Chloro-5-methylpyrimidin-2-amine (cas: 20090-58-8) belongs to pyrimidine derivatives. The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives. As nucleotides in DNA and RNA, pyrimidine nucleotide derivatives have a wide range of biological applications. For example, pyrimidine derivatives are useful in DNA repair studies involving cancer and epigenetics.COA of Formula: C5H6ClN3

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

D’Alarcao, Marc et al. published their research in Journal of Organic Chemistry in 1985 | CAS: 4319-77-1

5-Bromo-4,6-dimethoxypyrimidine (cas: 4319-77-1) belongs to pyrimidine derivatives. Pyrimidines are isomeric with two other forms of diazines: pyridazine, with the nitrogen atoms in the 1 and 2 positions; and pyrazine, with the nitrogen atoms in the 1 and 4 positions. A Cu-catalyzed and 4-HO-TEMPO-mediated [3 + 3] annulation of commercially available amidines with saturated ketones enables an efficient and facile synthesis of structurally important pyrimidines via a cascade reaction of oxidative dehydrogenation/annulation/oxidative aromatization.Application of 4319-77-1

Synthesis of imidazo[4,5-h]-1,3-diazabiphenylene (lin-benzocyclobutadienopurine), a ring system having a benzocyclobutadieno spacer between the terminal rings of purine was written by D’Alarcao, Marc;Bakthavachalam, Venkatesalu;Leonard, Nelson J.. And the article was included in Journal of Organic Chemistry in 1985.Application of 4319-77-1 This article mentions the following:

Two distinct syntheses of the pyrimido[6,5-i]imidazo[4,5-g]cinnoline ring system were accomplished. The first of these began with 2-acetamido-4-chloro-5-nitroacetophenone, which was elaborated sequentially by fusion of the imidazole, pyridazine, and pyrimidine rings to provide the tetracyclic system. The second synthesis made use of a Pd-catalyzed cross-coupling reaction of (4,6-dimethoxypyrimidin-5-yl)zinc chloride and 3,4-dinitrobromobenzene, followed by closure of the imidazole and pyridazine rings. The flash vacuum pyrolysis (810-860°, 10-3 torr) of the unsubstituted tetracyclic compound, pyrimido[4,5-i]imidazo[4,5-g]cinnoline, resulted in the extrusion of N to provide imidazo[4,5-h]-1,3-diazabiphenylene (I), the parent mol. to a new class of linearly extended purine analogs. In the experiment, the researchers used many compounds, for example, 5-Bromo-4,6-dimethoxypyrimidine (cas: 4319-77-1Application of 4319-77-1).

5-Bromo-4,6-dimethoxypyrimidine (cas: 4319-77-1) belongs to pyrimidine derivatives. Pyrimidines are isomeric with two other forms of diazines: pyridazine, with the nitrogen atoms in the 1 and 2 positions; and pyrazine, with the nitrogen atoms in the 1 and 4 positions. A Cu-catalyzed and 4-HO-TEMPO-mediated [3 + 3] annulation of commercially available amidines with saturated ketones enables an efficient and facile synthesis of structurally important pyrimidines via a cascade reaction of oxidative dehydrogenation/annulation/oxidative aromatization.Application of 4319-77-1

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Okafor, Charles O. et al. published their research in European Journal of Medicinal Chemistry in 1977 | CAS: 63931-22-6

5-Bromo-6-chloro-2-(methylthio)pyrimidin-4-amine (cas: 63931-22-6) belongs to pyrimidine derivatives. The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives. A Cu-catalyzed and 4-HO-TEMPO-mediated [3 + 3] annulation of commercially available amidines with saturated ketones enables an efficient and facile synthesis of structurally important pyrimidines via a cascade reaction of oxidative dehydrogenation/annulation/oxidative aromatization.Safety of 5-Bromo-6-chloro-2-(methylthio)pyrimidin-4-amine

Studies in the heterocyclic series. XIII. New CNS-depressants derived from 1,9-diazaphenoxazine and two isomeric triazaphenothiazine ring systems was written by Okafor, Charles O.;Steenberg, Marie L.;Buckley, Joseph P.. And the article was included in European Journal of Medicinal Chemistry in 1977.Safety of 5-Bromo-6-chloro-2-(methylthio)pyrimidin-4-amine This article mentions the following:

Triazaphenothiazines I (R = NH2, H, SMe, OMe; R1 = NH2, Me, Cl, OH, OMe) and II (R = H, NH2, Cl; R1 = NH2, OH, Cl; R2 = MeO, Cl) were prepared in 78-93% yield. Reaction of 2-amino-3-mercapto-6-picoline with 2-amino-5-bromo-4-chloro-6-methylpyrimidine in the presence of H2SO4 and Na2SO3 gave 77% I (R = NH2, R1 = Me). All I and II showed appreciable CNS depressant activities comparable with the activity of chlorpromazine when tested in mice and rats; I (R = H, R1 = NH2) and II (R = R1 = Cl, R2 = MeO) were the most promising. All I and II decreased motor activity and rate of respiration within 30 min and body temperature was decreased by 0.5-1.9° compared to 0.8° with chlorpromazine. In the experiment, the researchers used many compounds, for example, 5-Bromo-6-chloro-2-(methylthio)pyrimidin-4-amine (cas: 63931-22-6Safety of 5-Bromo-6-chloro-2-(methylthio)pyrimidin-4-amine).

5-Bromo-6-chloro-2-(methylthio)pyrimidin-4-amine (cas: 63931-22-6) belongs to pyrimidine derivatives. The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives. A Cu-catalyzed and 4-HO-TEMPO-mediated [3 + 3] annulation of commercially available amidines with saturated ketones enables an efficient and facile synthesis of structurally important pyrimidines via a cascade reaction of oxidative dehydrogenation/annulation/oxidative aromatization.Safety of 5-Bromo-6-chloro-2-(methylthio)pyrimidin-4-amine

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Sengar, Ragini et al. published their research in International Journal of Chemical Sciences in 2007 | CAS: 40230-24-8

4,6-Diphenylpyrimidin-2-amine (cas: 40230-24-8) belongs to pyrimidine derivatives. Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. As nucleotides in DNA and RNA, pyrimidine nucleotide derivatives have a wide range of biological applications. For example, pyrimidine derivatives are useful in DNA repair studies involving cancer and epigenetics.Name: 4,6-Diphenylpyrimidin-2-amine

Synthesis and characterization of some pyrimidine compounds was written by Sengar, Ragini;Tyagi, Sushma;Gazal, Umaima;Pathak, Vishal;Verma, Ranu;Pathak, P.. And the article was included in International Journal of Chemical Sciences in 2007.Name: 4,6-Diphenylpyrimidin-2-amine This article mentions the following:

Some pyrimidine compounds have been synthesized via heterocyclization of dibromochalcones. The structures of the prepared compounds were characterized using elementary anal., IR, NMR and mass spectrometry. Fragmentation patterns for these compounds were given. The important IR-bands were assigned to the corresponding groups. In the experiment, the researchers used many compounds, for example, 4,6-Diphenylpyrimidin-2-amine (cas: 40230-24-8Name: 4,6-Diphenylpyrimidin-2-amine).

4,6-Diphenylpyrimidin-2-amine (cas: 40230-24-8) belongs to pyrimidine derivatives. Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. As nucleotides in DNA and RNA, pyrimidine nucleotide derivatives have a wide range of biological applications. For example, pyrimidine derivatives are useful in DNA repair studies involving cancer and epigenetics.Name: 4,6-Diphenylpyrimidin-2-amine

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Kautny, Paul et al. published their research in Chemistry – A European Journal in 2016 | CAS: 37972-24-0

2-Ethynylpyrimidine (cas: 37972-24-0) belongs to pyrimidine derivatives. Pyrimidines are isomeric with two other forms of diazines: pyridazine, with the nitrogen atoms in the 1 and 2 positions; and pyrazine, with the nitrogen atoms in the 1 and 4 positions. A Cu-catalyzed and 4-HO-TEMPO-mediated [3 + 3] annulation of commercially available amidines with saturated ketones enables an efficient and facile synthesis of structurally important pyrimidines via a cascade reaction of oxidative dehydrogenation/annulation/oxidative aromatization.Name: 2-Ethynylpyrimidine

Structure-Property Relationships in Click-Derived Donor-Triazole-Acceptor Materials was written by Kautny, Paul;Bader, Dorian;Stoeger, Berthold;Reider, Georg A.;Froehlich, Johannes;Lumpi, Daniel. And the article was included in Chemistry – A European Journal in 2016.Name: 2-Ethynylpyrimidine This article mentions the following:

To shed light on intramol. charge-transfer phenomena in 1,2,3-triazole-linked materials, a series of 1,2,3-triazole-linked push-pull chromophores were prepared and studied exptl. and computationally. Investigated modifications include variation of donor and/or acceptor strength and linker moiety as well as regioisomers. Photophys. characterization of intramol. charge-transfer features revealed ambipolar behavior of the triazole linker, depending on the substitution position. Furthermore, non-centrosym. materials were subjected to second-harmonic generation measurements, which revealed the high nonlinear optical activity of this class of materials. In the experiment, the researchers used many compounds, for example, 2-Ethynylpyrimidine (cas: 37972-24-0Name: 2-Ethynylpyrimidine).

2-Ethynylpyrimidine (cas: 37972-24-0) belongs to pyrimidine derivatives. Pyrimidines are isomeric with two other forms of diazines: pyridazine, with the nitrogen atoms in the 1 and 2 positions; and pyrazine, with the nitrogen atoms in the 1 and 4 positions. A Cu-catalyzed and 4-HO-TEMPO-mediated [3 + 3] annulation of commercially available amidines with saturated ketones enables an efficient and facile synthesis of structurally important pyrimidines via a cascade reaction of oxidative dehydrogenation/annulation/oxidative aromatization.Name: 2-Ethynylpyrimidine

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia