5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid

Modify Date: 2024-01-09 17:15:54

5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid Structure
5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid structure
Common Name 5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid
CAS Number 16281-39-3 Molecular Weight 256.63900
Density 1.539g/cm3 Boiling Point 521.4ºC at 760mmHg
Molecular Formula C11H9ClO5 Melting Point N/A
MSDS N/A Flash Point 269.2ºC

 Names

Name 5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.539g/cm3
Boiling Point 521.4ºC at 760mmHg
Molecular Formula C11H9ClO5
Molecular Weight 256.63900
Flash Point 269.2ºC
Exact Mass 256.01400
PSA 83.83000
LogP 1.84520
Vapour Pressure 1.06E-11mmHg at 25°C
Index of Refraction 1.62

 Safety Information

HS Code 2932999099

 Synthetic Route

~55%

5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid Structure

5-chloro-3,4-di...

CAS#:16281-39-3

Literature: Cramer, Benedikt; Harrer, Henning; Nakamura, Kazuhiko; Uemura, Daisuke; Humpf, Hans-Ulrich Bioorganic and Medicinal Chemistry, 2010 , vol. 18, # 1 p. 343 - 347

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5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid Structure

5-chloro-3,4-di...

CAS#:16281-39-3

Literature: Iowa State University Research Foundation, Inc. Patent: US4346039 A1, 1982 ;

~47%

5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid Structure

5-chloro-3,4-di...

CAS#:16281-39-3

Literature: Sibi,M.P.; Chattopadhyay,S.; Dankwardt,J. Journal of the American Chemical Society, 1985 , vol. 107, p. 6312

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5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid Structure

5-chloro-3,4-di...

CAS#:16281-39-3

Literature: Sibi,M.P.; Chattopadhyay,S.; Dankwardt,J. Journal of the American Chemical Society, 1985 , vol. 107, p. 6312

~%

5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid Structure

5-chloro-3,4-di...

CAS#:16281-39-3

Literature: Sibi,M.P.; Chattopadhyay,S.; Dankwardt,J. Journal of the American Chemical Society, 1985 , vol. 107, p. 6312

~%

5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid Structure

5-chloro-3,4-di...

CAS#:16281-39-3

Literature: Bouisseau, Anais; Roland, Aurelie; Reillon, Florence; Schneider, Remi; Cavelier, Florine Organic Letters, 2013 , vol. 15, # 15 p. 3888 - 3890

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5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid Structure

5-chloro-3,4-di...

CAS#:16281-39-3

Literature: Bouisseau, Anais; Roland, Aurelie; Reillon, Florence; Schneider, Remi; Cavelier, Florine Organic Letters, 2013 , vol. 15, # 15 p. 3888 - 3890

~%

5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1h-2-benzopyran-1-one-7-carboxylic acid Structure

5-chloro-3,4-di...

CAS#:16281-39-3

Literature: Gabriele, Bartolo; Attya, Mohamed; Fazio, Alessia; Di Donna, Leonardo; Plastina, Pierluigi; Sindona, Giovanni Synthesis, 2009 , # 11 art. no. Z01909SS, p. 1815 - 1820

 Customs

HS Code 2932999099
Summary 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

1H-2-Benzopyran-7-carboxylic acid,5-chloro-3,4-dihydro-8-hydroxy-3-methyl-1-oxo
5-chloro-8-hydroxy-3-methyl-1-oxoisochroman-7-carboxylic acid
3-methyl-5-chloro-7-carboxy-8-hydroxyisocoumarin
5-chloro-8-hydroxy-3,4-dihydro-3-methylisocoumarin-7-carboxylic acid