4-Hydroxy-2H-thiochromen-2-one

Modify Date: 2025-08-25 11:55:00

4-Hydroxy-2H-thiochromen-2-one Structure
4-Hydroxy-2H-thiochromen-2-one structure
 Common Name 4-Hydroxy-2H-thiochromen-2-one
CAS Number 16854-67-4 Molecular Weight 178.208
Density 1.5±0.1 g/cm3 Boiling Point 304.9±42.0 °C at 760 mmHg
Molecular Formula C9H6O2S Melting Point N/A
MSDS N/A Flash Point 138.2±27.9 °C

 Names

Name 2-hydroxythiochromen-4-one
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.5±0.1 g/cm3
Boiling Point 304.9±42.0 °C at 760 mmHg
Molecular Formula C9H6O2S
Molecular Weight 178.208
Flash Point 138.2±27.9 °C
Exact Mass 178.008850
PSA 65.54000
LogP 2.23
Vapour Pressure 0.0±0.7 mmHg at 25°C
Index of Refraction 1.726
InChIKey OSIDMAJZERBPOJ-UHFFFAOYSA-N
SMILES O=c1cc(O)sc2ccccc12

 Safety Information

HS Code 2932209090

 Synthetic Route

1-Phenyl-2-sulfanylethanone structure

1-Phenyl-2-sulf...

CAS#:26824-02-2

Ethyl carbonate structure

Ethyl carbonate

CAS#:105-58-8

~88%

4-Hydroxy-2H-thiochromen-2-one Structure

4-Hydroxy-2H-th...

CAS#:16854-67-4

Literature: Jung; Park Synthetic Communications, 2001 , vol. 31, # 8 p. 1195 - 1200
1-Phenyl-2-sulfanylethanone structure

1-Phenyl-2-sulf...

CAS#:26824-02-2

Dimethyl Carbonate structure

Dimethyl Carbonate

CAS#:616-38-6

~82%

4-Hydroxy-2H-thiochromen-2-one Structure

4-Hydroxy-2H-th...

CAS#:16854-67-4

Literature: Jung; Park Synthetic Communications, 2001 , vol. 31, # 8 p. 1195 - 1200
phosgene structure

phosgene

CAS#:75-44-5

1-Phenyl-2-sulfanylethanone structure

1-Phenyl-2-sulf...

CAS#:26824-02-2

~65%

4-Hydroxy-2H-thiochromen-2-one Structure

4-Hydroxy-2H-th...

CAS#:16854-67-4

Literature: Jung; Park Synthetic Communications, 2001 , vol. 31, # 8 p. 1195 - 1200
Ethanethioic acid, S-[2-(chlorocarbonyl)phenyl] ester (9CI) structure

Ethanethioic ac...

CAS#:62972-22-9

~%

4-Hydroxy-2H-thiochromen-2-one Structure

4-Hydroxy-2H-th...

CAS#:16854-67-4

Literature: Journal of Molecular Structure, , vol. 1037, p. 305 - 316
diethyl 2-(2-acetylmercapto)benzoylmalonate structure

diethyl 2-(2-ac...

CAS#:273380-14-6

~%

4-Hydroxy-2H-thiochromen-2-one Structure

4-Hydroxy-2H-th...

CAS#:16854-67-4

Literature: Journal of Molecular Structure, , vol. 1037, p. 305 - 316
Acetylthiosalicylic acid structure

Acetylthiosalic...

CAS#:55819-78-8

~%

4-Hydroxy-2H-thiochromen-2-one Structure

4-Hydroxy-2H-th...

CAS#:16854-67-4

Literature: Journal of Molecular Structure, , vol. 1037, p. 305 - 316

 Customs

HS Code 2932209090
Summary 2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

1-thio-4-hydroxycoumarin
4-Hydroxy-2H-thiochromen-2-one
4-hydroxy-1-thiocoumarin
4-hydroxythiocoumarun
4-Hydroxythiocoumarin
4-hydroxy-2H-1-benzothiopyran-2-one
2H-1-Benzothiopyran-2-one, 4-hydroxy-
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