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21259-42-7

21259-42-7结构式

常用中文名：2-Oxo-2H-1-benzopyran-3-carboxylic acid methyl ester
常用英文名：2-Oxo-2H-1-benzopyran-3-carboxylic acid methyl ester
CAS号：21259-42-7
分子式：C₁₁H₈O₄
分子量：204.17900
发布时间：2016-07-21 06:02:10
更新时间：2024-01-11 09:16:39

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英文名	methyl 2-oxochromene-3-carboxylate
英文别名	2-Oxo-2H-chromene-3-carboxylic acid methyl ester Methyl 2-oxo-2H-chromene-3-carboxylate methyl 2-oxochromen-3-carboxylate F0110-0035 2-Oxo-2H-1-benzopyran-3-carboxylic acid methyl ester 2-oxochromene-3-carboxylic acid methyl ester 2H-1-BENZOPYRAN-3-CARBOXYLIC ACID,2-OXO-,METHYL ESTER methyl coumarin-3-carboxylate

密度	1.337g/cm3
沸点	368.9ºC at 760 mmHg
分子式	C₁₁H₈O₄
分子量	204.17900
闪点	192.9ºC
精确质量	204.04200
PSA	56.51000
LogP	1.57960
蒸汽压	1.23E-05mmHg at 25°C
折射率	1.578

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DJ2502400

CHEMICAL NAME :: 2H-1-Benzopyran-3-carboxylic acid, 2-oxo-, methyl ester

CAS REGISTRY NUMBER :: 21259-42-7

BEILSTEIN REFERENCE NO. :: 0176130

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C11-H8-O4

MOLECULAR WEIGHT :: 204.19

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 72 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: YKKZAJ Yakugaku Zasshi. Journal of Pharmacy. (Nippon Yakugakkai, 2-12-15 Shibuya, Shibuya-ku, Tokyo 150, Japan) No.1- 1881- Volume(issue)/page/year: 75,1486,1955

海关编码	2932209090

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海关编码	2932209090
中文概述	2932209090. 其他内酯. 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
Summary	2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%