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20721-17-9生产厂家

20721-17-9价格

20721-17-9

20721-17-9结构式
20721-17-9结构式

化源商城直购

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
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

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

危害码 (欧洲) Xi
海关编码 2933990090

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20721-17-9结构式

20721-17-9

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