20721-17-9

• 常用中文名：2-羟基-5甲基吡嗪
• 常用英文名：5-Methylpyrazin-2-ol
• CAS号：20721-17-9
• 分子式：C₅H₆N₂O
• 分子量：110.114
• 发布时间：2018-02-09 08:00:00
• 更新时间：2024-01-03 19:10:11

名称

• 中文名: 2-羟基-5甲基吡嗪
• 英文名: 5-methyl-1H-pyrazin-2-one
• 中文别名: 5-甲基吡嗪-2(1H)-酮; 2-羟基-5-甲基吡嗪
• 英文别名: 2-pyrazinol, 5-methyl-; 5-Methyl-2(1H)-pyrazinone; 2(1H)-Pyrazinone, 5-methyl-; 5-Methyl-2-oxo-1,2-dihydro-pyrazin; 2-Hydroxy-5-methylpyrazine; 5-Methyl-1H-pyrazin-2-on; 5-Methylpyrazin-2-ol; Pyrazine,2-hydroxy-5-methyl; Pyrazinol,5-methyl

物化性质

• 密度: 1.2±0.1 g/cm3
• 沸点: 376.2ºC at 760 mmHg
• 分子式: C₅H₆N₂O
• 分子量: 110.114
• 闪点: 181.3ºC
• 精确质量: 110.048012
• PSA: 46.01000
• LogP: -0.90
• 蒸汽压: 3.41E-06mmHg at 25°C
• 折射率: 1.577
• 储存条件: 室温，干燥

毒性和生态

CHEMICAL IDENTIFICATION RTECS NUMBER : UQ3500000 CHEMICAL NAME : Pyrazine, 2-hydroxy-5-methyl- CAS REGISTRY NUMBER : 20721-17-9 LAST UPDATED : 199106 DATA ITEMS CITED : 1 MOLECULAR FORMULA : C5-H6-N2-O MOLECULAR WEIGHT : 110.13 WISWESSER LINE NOTATION : T6N DNJ BQ E1 HEALTH HAZARD DATA ACUTE TOXICITY DATA TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 1300 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 17,244,1970

安全

• 危害码 (欧洲): Xi
• 海关编码: 2933990090

合成路线

1668-10-6 78-98-8 ~% 20721-18-0 20721-17-9

文献：Journal of the American Chemical Society, , vol. 74, p. 1580,1582 US2520088 , ;

海关

海关编码	2933990090
中文概述	2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0%
申报要素	品名, 成分含量, 用途, 乌洛托品请注明外观, 6－己内酰胺请注明外观, 签约日期
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%