Tag: M.W:100-200

Reference of 5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloride. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloride, is researched, Molecular C8H12ClNO2, CAS is 148-51-6, about Preconvulsive changes in brain glucose metabolism following drugs inhibiting glutamate decarboxylase. Author is Horton, R. W.; Meldrum, B. S..

DL-C-allylglycine (I) [7685-44-1], 4-deoxypyridoxine-HCl (II) [148-51-6], and DL-methionine-D-sulfoximine (III) (180, 250, and 300 mg/kg resp., i.p.) each induced preconvulsive increases in the brain glucose [50-99-7] concentration of mice at room temperature; II and III also increased brain glycogen [9005-79-2] concentrations in room-temperature mice, but only II did so in mice maintained at 33-4°. Only with I was the increase in brain glucose concentration associated with an increase in blood glucose concentration I, II, III, or isoniazid [54-85-3] (150 mg/kg) reduced rectal temperature in mice at room temperature but not those at 33-4°. Isoniazid reduced brain glucose and glycogen concentrations in mice at 33-4°, but did not affect mice at room temperature The relation between the effects of these drugs on brain carbohydrates and amino acid metabolism is discussed.

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Pyrimidine | C4H4N2 – PubChem,
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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《A novel BMSN (biologically synthesized mesoporous silica nanoparticles) material: synthesis using a bacteria-mediated biosurfactant and characterization》. Authors are Sharma, Raju Kumar; Wang, Shau-Chun; Maity, Jyoti Prakash; Banerjee, Pritam; Dey, Gobinda; Huang, Yi-Hsun; Bundschuh, Jochen; Hsiao, Ping-Gune; Chen, Tsung-Hsien; Chen, Chien-Yen.The article about the compound:5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloridecas:148-51-6,SMILESS:OC1=C(C)C(CO)=CN=C1C.[H]Cl).Computed Properties of C8H12ClNO2. Through the article, more information about this compound (cas:148-51-6) is conveyed.

Mesoporous materials (MMs) have recently been applied as advanced nanomaterials in different fields (separation, catalysis, adsorption etc.). Synthesis of MMs by chem. surfactants is not ecofriendly. This study focused on the biol. synthesis of a MM by sol-gel method, using a Bacillus subtilis BBK006-mediated surfactant (template) and a precursor (TEOS). The biol. synthesized mesoporous silica nanoparticles (BMSN) were formed at calcination temperatures of 450-600 °C. The BMSN comprise Si and O elements with sp. weights of 56.09% and 42.13% resp., where the at.% was detected to be 41.79% and 55.10%, resp. The phase identity of the synthesized particles (61-300 nm uniform spherical shape; surface area: 8.2616 m2 g-1; pore diameter at 550 °C: 14.8516 nm) was confirmed with wide-angle XRD (10°-81°). A typical type IV isotherm was exhibited (BET curves) following IUPAC nomenclature and confirmed the mesoporous nature. The green-synthesized biosurfactant-mediated BMSN is an environmentally promising material to apply in biomedical science (e.g., antimicrobial activity, drug delivery, CMC, anticancer activity) and oil spill management.

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Sanders, L. B.; Cetorelli, J. J.; Winefordner, James D. published an article about the compound: 5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloride( cas:148-51-6,SMILESS:OC1=C(C)C(CO)=CN=C1C.[H]Cl ).Recommanded Product: 148-51-6. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:148-51-6) through the article.

Phosphorescence excitation and emission wavelength peaks, lifetimes, limits of detection, and concentration ranges of anal. usefulness of 37 antimetabolites in rigid (77°K.) ethanolic solution were determined Seventeen of the metabolites produced anal. useful phosphorescence, whereas the remaining 20 were of limited or no anal. use.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Biological radiation protection. LIX. The meaning of radiation-caused changes in the content of metabolites to the survival rate of mice, published in 1964, which mentions a compound: 148-51-6, Name is 5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloride, Molecular C8H12ClNO2, Electric Literature of C8H12ClNO2.

After radiation, changes occur in albumin metabolism, especially in the case of tryptophan and cysteine. The changes reflect a curbing of the activity of amino acid decarboxylase with pyridoxal 5-phosphate as coenzyme. The following compounds increased the mortality rate when given with an x-ray dose of 505 r. (L.D.16/30): 4-deoxypyridoxine-HCl, isonicotinic acid hydrazide,DL-tryptophan, DL-kynurenine, and L-kynurenine. Taurine, given with 590 r. (L.D.64/30), increased the survival rate.

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Pyrimidine | C4H4N2 – PubChem,
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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 4-Chloro-8-methylquinoline, is researched, Molecular C10H8ClN, CAS is 18436-73-2, about Synthesis and photochemistry of two quinoline analogs of the perimidinespirohexadienone family of photochromes.Computed Properties of C10H8ClN.

The authors report the detailed synthesis and photochem. of two analogs (specifically 3,5-di-tert-butyl-7′-methyl- and 3,5-di-tert-butyl-7′,9′-dimethyl-1′,3′-dihydrospirocyclohexa[2,5]diene-1,2′-pyrido[4,3,2-de]quinazolin-4-one) of the perimidinespirohexadienone (3,5-di-tert-butyl-1′,3′-dihydrospirocyclohexa[2,5]diene-1,2′-perimidin-4-one) family of photochromes in which the naphthalene moiety of the parent is replaced by a quinoline, and compare them to the parent compound Molar absorptivities of both the short wavelength spirocyclic isomer (SW) and long wavelength quinonimine isomer (LW) of each were determined by a combination of proton NMR and UV-vis spectroscopy in solvents of varying polarity. Quantum yield measurements for photoisomerization of SW to LW are reported in those same solvents, with qual. extrapolation to addnl. solvents. The position and rate of the thermal equilibrium reverting LW to SW is estimated for these compounds The 9′-Me in SW (6-Me in LW) is found to be essential for complete reversion of LW to SW in the dark. Finally one-dimensional NOE NMR spectroscopy was used to conclusively determine the structure of LW for the quinoline analogs as the 4-(5-aminoquinolin-4-ylimino)-2,6-di-tert-butylcyclohexa-2,5-dienone resulting from opening toward the quinoline nitrogen, rather than the 4-(4-aminoquinolin-5-ylimino) structure that would result from spirocyclic ring opening away from the quinoline nitrogen which had been initially proposed by V.I Minkin et al. (1999) for very similar compounds

Here is just a brief introduction to this compound(18436-73-2)Computed Properties of C10H8ClN, more information about the compound(4-Chloro-8-methylquinoline) is in the article, you can click the link below.

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Name: 5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloride. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloride, is researched, Molecular C8H12ClNO2, CAS is 148-51-6, about The structure of a sulfur-containing compound with vitamin B6 activity.

Pyridoxal-HCl (0.001 mole) was added to a warm solution of 0.001 mole 2,4-dinitrophenylhydrazine in 40 ml. of 95% EtOH, the mixture gently heated 5 min., after cooling the orange-yellow crystals collected and suspended 3 times in water with stirring (30 min.) (the crystal color changed to red), filtered off, dried, and recrystallized from iso-BuOH to give yellow crystals of 2,4-dinitrophenylhydrazone, m. 256-7°. To 500 mg. diacetate of bis-4-pyridoxyl disulfide (IV) (500 mg.) in 5 ml. 0.1N HCl was added acetone to a slight turbidity. After standing in the cold, 360 mg. crystals of di-HCl salt separated, m. 222°. IV.2HCl (441 mg.) dissolved in 220 ml. H2O, neutralized with 168 mg. NaHCO3, shaken with 2.0 g. Raney Ni catalyst and 3 atm. H 4 hrs. at 25°, the catalyst removed, the combined filtrates concentrated in vacuo in 10 ml., solid NaHCO3 added to pH 8.6, the solution extracted with CHCl3 30 hrs., the extract concentrated to a sirup which was dissolved in EtOH, and alc. HCl added yielded 250 mg. crystals, m. 264-5°. IV.2HCl (500 mg.), 600 mg. Sn foil, and 6 ml. 4N HCl was shaken 20 hrs. at room temperature; after diluting with H2O the Sn removed as sulfide by filtration, the filtrate dried in vacuo, and recrystallized from EtOH gave 250-300 mg. 4-pyridoxyl mercaptan (VI). VI (100 mg. in 25 ml. H2O) was adjusted to pH 8.5 with 2N NH4OH and air passed through the solution until the nitroprusside test was neg. Oxidation was accompanied by the precipitation of the free base of IV in 66% yield, m. 222°. A mixed sample of SB8.2HCl (Berhart, et al., CA 54, 19993c) and IV.2HCl did not depress the m.p. The identity of both compounds was proved by paper chromatography.

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Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 35621-01-3, is researched, SMILESS is NC1CCNCC1.[H]Cl.[H]Cl, Molecular C5H14Cl2N2Journal, Journal of Heterocyclic Chemistry called The synthesis of a series of 7-amino-1-cyclopropyl-8-fluoro-1,4-dihydro-4-oxo-1,6-naphthyridine-3-carboxylic acids as potential antibacterial agents, Author is Sanchez, Joseph P.; Gogliotti, Rocco D., the main research direction is aminonaphthyridinecarboxylic acid preparation potential bactericide; Schiemann fluorination pyridyldiazonum salt.Related Products of 35621-01-3.

A series of title compounds I [R = 3-aminopyrrolidin-1-yl, 3-(ethylaminomethyl)pyrrolidin-1-yl, 4-aminopiperidin-1-yl, piperazin-1-yl] was prepared and evaluated for antibacterial activity (no data). I were prepared by the displacement of the chloro substituent from I (R = Cl) with the requisite nitrogen nucleophile. The naphthyridine acid was synthesized in ten steps from pyridinecarboxylate II (R1 = OH, R2 = NO2). The key step in the sequence was a Schiemann reaction of II (R1 = Cl, R2 = N2+ PF6-) to give II (R1 = Cl, R2 = F).

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Postgraduate Medical Journal, Supplement called Antiviral effect of D-penicillamine, Author is Jaffe, Israeli A.; Merryman, Parvin; Ehrenfeld, Ellie, which mentions a compound: 148-51-6, SMILESS is OC1=C(C)C(CO)=CN=C1C.[H]Cl, Molecular C8H12ClNO2, HPLC of Formula: 148-51-6.

Of a series of mercaptan compounds tested, only D-penicillamine [52-67-5] possessed antiviral activity against polio virus in tissue culture. D-penicillamine produced a marked inhibition in viral directed RNA and protein synthesis, which was not dependent upon vitamin B6 antagonism. The effect was completely reversible.

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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Synthesis of 2,4-dimethyl-3-hydroxy-5-hydroxymethylpyridine, published in 1966, which mentions a compound: 148-51-6, mainly applied to , SDS of cas: 148-51-6.

2,4-Dimethyl- 3 – hydroxy-5- hydroxymethylpyridine (4- deoxypyridoxine) (I) was synthesized via the following intermediates: 2,4-dimethyl-5-cyano-6-pyridone (II), 2,4-dimethyl-3-nitro-5-cyano-6-pyridone (III), and 2,4-dimethyl-3-nitro-5-cyano-6-chloropyridine (IV). Reduction of IV was carried out in 1 step in dilute HCl over Pd-C. 2,4-Dimethyl-3-amino-5-aminomethylpyridine was converted without isolation to I by treatment with NaNO2. Thus, 33 ml. NH4OH (d20 0.9) was added with stirring to 40 g. EtO2CCH2CN, the mixture cooled with ice to 0-2° and the precipitate filtered off, washed at 0° with 20 ml. cold EtOH, and dried to yield 23.8 g. cyanoacetamide (V), m. 120-2°. The filtrate was evaporated to dryness to yield an addnl. 3.95 g. Acetylacetone (10.0 g.) was added at 70° to 8.4 g. V in 50 ml. MeOH and 1.12 ml. Me2NH to precipitate 88.1% II, m. 293.1-4.2°. A suspension of 4.44 g. II in 15 ml. Ac2O is treated with stirring with 2.3 ml. HNO3 (d20 1.4) and 2.3 ml. Ac2O at 35-40°, and the mixture stirred 2 hrs. at 18-20° and poured upon 23 g. crushed ice, to precipitate 56.4% yellow III, m. 272.0-2.6° (alc.). P2O5 (5.3 g.) is added to a suspension of 3.6 g. III in 36 ml. PhCl, the mixture heated with stirring 3 hrs. at 118-120° the solvent removed at 45-50°/10 mm., the residue treated with 3.6 ml. absolute alc., stirred, and left 8 hrs. at 0-4°, the precipitate filtered off, washed at 0° with 2 ml. alc., and dried, and the residue extracted with petr. ether (b. 60-70°) to give 62.2% yellow IV, m. 114-15°. IV (2.4 g.) in 25 ml. ice water was added to a pre-hydrogenated mixture of 0.10 g. PdCl2 with H2O, HCl, and C, the hydrogenation continued until the theoretical H absorption, the catalyst separated and washed with 2 ml. H2O, 2.4 ml. HCl (d20 1.18) added to the solution and washings, and the solution heated 1.5 hrs. at 80-5° during which 1.6 g. NaNO2 in 5 ml. H2O was added, the heating continued 30 more min. (neg. starch-iodide test), the solution evaporated in vacuo, the residue extracted with absolute alc., the extracts treated with activated C and concentrated until the appearance of crystals, the mixture kept 8 hrs. at 0-4°, and the precipitate filtered off, washed at 0° with 1 ml. alc., and dried to give 42.2% I, m. 256.1-7.2°.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Synthesis of bicyclic N-arylmethyl-substituted iminoribitol derivatives as selective nucleoside hydrolase inhibitors, published in 2009-02-28, which mentions a compound: 18436-73-2, Name is 4-Chloro-8-methylquinoline, Molecular C10H8ClN, Category: pyrimidines.

The purine metabolism of Trypanosoma and Leishmania spp. provides a good target in the search for new selective drugs. Bicyclic N-arylmethyl-substituted iminoribitols were developed as inhibitors of T. vivax nucleoside hydrolase, a key enzyme of the purine salvage pathway. The obtained results and structure-activity data confirmed our model for inhibitor binding with a hydrogen bond between a nitrogen atom of the nucleobase mimetic and the protonated Asp40 from the enzyme. This interaction depends on an optimal pKa value, which can be influenced by the electronic properties of the substituents. These compounds are potent, selective inhibitors of nucleoside hydrolase and are inactive toward human nucleoside phosphorylase.

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