5-chloro-8-hydroxy-3-methyl-1-oxo-3,4-dihydroisochromene-7-carboxylic acid

7-羧基-5-氯-8-羟基-3,4-二氢-3-甲基异香豆素

Also known as: Ochratoxin alpha, 5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1H-2-benzopyran-1-one-7-carboxylic acid, 5-chloro-8-hydroxy-3,4-dihydro-3-methylisocoumarin-7-carboxylic acid, 7-carboxy-5-chloro-8-hydroxy-3,4-dihydro-3-methylisocoumarin, 3-methyl-5-chloro-8-hydroxy-3,4-dihydroisocoumarin-7-carboxylic acid

5-chloro-8-hydroxy-3-methyl-1-oxo-3,4-dihydroisochromene-7-carboxylic acid (CAS 16281-39-3) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C11H9ClO5 and a molecular weight of 256.63900 g/mol. It is also known as Ochratoxin alpha, 5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1H-2-benzopyran-1-one-7-carboxylic acid and 5-chloro-8-hydroxy-3,4-dihydro-3-methylisocoumarin-7-carboxylic acid. Key properties include a boiling point of 521.4ºC at 760mmHg, a density of 1.539g/cm3 and a flash point of 269.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

16281-39-3

Jingsj CID

J-953099-5

Molecular Formula

C₁₁H₉ClO₅

Chinese Name

7-羧基-5-氯-8-羟基-3,4-二氢-3-甲基异香豆素

Molecular Weight

256.63900 g/mol

Category

Organohalogen Compounds

Last updated

8/21/2026