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5-Hydroxypyrazine-2-carboxylic acid methyl ester

CAS No.
13924-95-3
Chemical Name:
5-Hydroxypyrazine-2-carboxylic acid methyl ester
Synonyms
METHYL 5-HYDROXYPYRAZINE-2-CARBOXYLATE;methyl 5-oxo-4,5-dihydropyrazine-2-carboxylate;CBI-BB ZERO/008486;Methyl 5-hydropyrazine-2-carboxylate;methyl-5-hydroxy-2-pyrazinecarboxylate;methyl 6-oxo-1H-pyrazine-3-carboxylate;Methyl 5-hydroxypyrazine-2-carboxylate 95%;Methyl 5-oxo-4,5-dihydro-2-pyrazinecarboxylate;Methyl 4,5-dihydro-5-oxo-2-pyrazinecarboxylate;5-Hydrocy-pyrazine-2-carboxylic acid methyl ester
CBNumber:
CB7247194
Molecular Formula:
C6H6N2O3
Molecular Weight:
154.12
MDL Number:
MFCD08273469
MOL File:
13924-95-3.mol
MSDS File:
SDS
Last updated:2026-05-28 02:56:40

5-Hydroxypyrazine-2-carboxylic acid methyl ester Properties

Melting point 183-185 °C
Density 1.39
storage temp. Sealed in dry,Room Temperature
pka 10.55±0.40(Predicted)
Appearance White to light brown Solid

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H319-H335-H302+H312+H332-H315
Precautionary statements  P280
HS Code  2933998090

5-Hydroxypyrazine-2-carboxylic acid methyl ester price More Price(51)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
AstaTech 63306 METHYL 5-HYDROXYPYRAZINE-2-CARBOXYLATE 97% 13924-95-3 5G $37 2026-04-30 Buy
AstaTech 63306 METHYL 5-HYDROXYPYRAZINE-2-CARBOXYLATE 97% 13924-95-3 25G $139 2026-04-30 Buy
AstaTech 63306 METHYL 5-HYDROXYPYRAZINE-2-CARBOXYLATE 97% 13924-95-3 100G $574 2026-04-30 Buy
Activate Scientific AS30976 Methyl 5-hydroxypyrazine-2-carboxylate 97% 13924-95-3 1g $27 2026-06-04 Buy
Activate Scientific AS30976 Methyl 5-hydroxypyrazine-2-carboxylate 97% 13924-95-3 5g $60 2026-06-04 Buy
Product number Packaging Price Buy
63306 5G $37 Buy
63306 25G $139 Buy
63306 100G $574 Buy
AS30976 1g $27 Buy
AS30976 5g $60 Buy

5-Hydroxypyrazine-2-carboxylic acid methyl ester Chemical Properties, Uses, Production

Uses

5-Hydroxypyrazine-2-carboxylic Acid Methyl Ester is a metabolite of Pyrazinamide (P840600), an antibacterial (tuberculostatic).

Synthesis

Methanol

67-56-1

5-Hydroxypyrazine-2-carboxylic acid

34604-60-9

5-Hydroxypyrazine-2-carboxylic acid methyl ester

13924-95-3

General procedure for the synthesis of methyl 5-hydroxypyrazine-2-carboxylate from methanol and 5-oxo-4,5-dihydropyrazine-2-carboxylic acid: Acetyl chloride (152 mL, 2.08 mol) was slowly added dropwise to methanol (5 L) at -20 °C. After the dropwise addition was completed, stirring was continued at this temperature for 30 minutes. Subsequently, 5-hydroxypyrazine-2-carboxylic acid (100 g, 714 mmol) was added and the mixture was heated to reflux and the reaction was maintained for 2 hours. Upon completion of the reaction, the solvent was removed by vacuum concentration and the residue was recrystallized from methanol (400 mL) to give 71 g (464 mmol) of methyl 5-hydroxypyrazine-2-carboxylate in 65% yield.

References

[1] Patent: WO2013/14567, 2013, A1. Location in patent: Page/Page column 80-81
[2] Patent: EP2239253, 2010, A1. Location in patent: Page/Page column 96
[3] Patent: EP1452525, 2004, A1. Location in patent: Page 15

5-Hydroxypyrazine-2-carboxylic acid methyl ester Preparation Products And Raw materials

Global Suppliers ( 133)
Supplier Tel Email Country ProdList Advantage
Capot Chemical Co., Ltd +86 (0) 571 85 58 67 18 China 18187 66
Pure Chemistry Scientific Inc. 001-857-928-2050 or 1-888-588-9418 sales@chemreagents.com United States 10174 62
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Chembon Pharmaceutical Co., Ltd. 028-84252981 18583719936 sales@chembon.com.cn China 854 64
Shanghai Cuisen Pharmaceutical Technology Co., Ltd. 13472757003 yongnan.wang@cendrix.cn China 974 65
Shanghai Sunway Pharmaceutical Technology Co., Ltd 13761987713 hxzheng@sunwaypharm.cn China 8663 57
Tongchuang Pharma(Suzhou). Co., Ltd. 0512-63263366 18912765016 tongtf110@sina.com China 984 62
Shanghai Sphchem Co., Ltd. 021-56491756 13512199871 2819742715@qq.com China 3994 55
Shanghai yirong biology science and technology co., ltd 18049974220 3060526242@qq.com China 999 60
Kohn & Shawn Pharmatech Co.,Ltd 0943-8293106 sales@kyxpharma.com China 297 55

View Latest Price from 5-Hydroxypyrazine-2-carboxylic acid methyl ester manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
5-Hydroxypyrazine-2-carboxylic acid methyl ester  pictures 2026-08-20 5-Hydroxypyrazine-2-carboxylic acid methyl ester
13924-95-3
$1.10 1g 99.00% 100 Tons Dideu Industries Group Limited
Methyl5-hydroxypyrazine-2-carboxylate pictures 2020-04-30 Methyl5-hydroxypyrazine-2-carboxylate
13924-95-3
1KG 99.0%+ 800 tons Shaanxi Dideu Medichem Co. Ltd
	5-Hydroxypyrazine-2-carboxylic acid methyl ester pictures 2019-09-02 5-Hydroxypyrazine-2-carboxylic acid methyl ester
13924-95-3
$7.00 1KG 99% Career Henan Chemical Co

5-Hydroxypyrazine-2-carboxylic acid methyl ester Spectrum

CBI-BB ZERO/008486 5-HYDROXY-PYRAZINE-2-CARBOXYLIC ACID METHYL ESTER 5-HYDROXY-PYRAZINE-2-CARBOXYLIC ACID METHYL ESTER 95% Methyl 5-oxo-4,5-dihydro-2-pyrazinecarboxylate Methyl 5-hydropyrazine-2-carboxylate 5-Hydrocy-pyrazine-2-carboxylic acid methyl ester 2-Hydroxy-5-(methoxycarbonyl)pyrazine, 2-Hydroxy-5-(methoxycarbonyl)-1,4-diazine Pyrazinecarboxylic acid, 4,5-dihydro-5-oxo-, methyl ester methyl-5-hydroxy-2-pyrazinecarboxylate Methyl 5-hydroxypyrazine-2-carboxylate 95% 2-Pyrazinecarboxylic acid, 4,5-dihydro-5-oxo-, methyl ester 5-Hydroxypyrazine-2-carboxylic acid methyl ester ISO 9001:2015 REACH methyl 6-oxo-1H-pyrazine-3-carboxylate Methyl 4,5-dihydro-5-oxo-2-pyrazinecarboxylate METHYL 5-HYDROXYPYRAZINE-2-CARBOXYLATE methyl 5-oxo-4,5-dihydropyrazine-2-carboxylate 13924-95-3 113924-95-3 Heterocycles Pyrazine