Methyl 4-hydroxy-2-butynoate

Modify Date: 2025-08-25 16:10:51

Methyl 4-hydroxy-2-butynoate Structure
Methyl 4-hydroxy-2-butynoate structure
 Common Name Methyl 4-hydroxy-2-butynoate
CAS Number 31555-05-2 Molecular Weight 114.099
Density 1.2±0.1 g/cm3 Boiling Point 219.9±23.0 °C at 760 mmHg
Molecular Formula C5H6O3 Melting Point N/A
MSDS N/A Flash Point 95.7±16.1 °C

 Names

Name methyl 4-hydroxybut-2-ynoate
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.2±0.1 g/cm3
Boiling Point 219.9±23.0 °C at 760 mmHg
Molecular Formula C5H6O3
Molecular Weight 114.099
Flash Point 95.7±16.1 °C
Exact Mass 114.031693
PSA 46.53000
LogP 0.64
Vapour Pressure 0.0±0.9 mmHg at 25°C
Index of Refraction 1.468
InChIKey SYPLUFBJMSFMTN-UHFFFAOYSA-N
SMILES COC(=O)C#CCO

 Safety Information

HS Code 2918199090

 Synthetic Route

Methyl 4-(tetrahydro-2H-pyran-2-yloxy)-2-butynoate structure

Methyl 4-(tetra...

CAS#:69511-49-5

~85%

Methyl 4-hydroxy-2-butynoate Structure

Methyl 4-hydrox...

CAS#:31555-05-2

Literature: Tamaru; Kimura; Tanaka; Kure; Yoshida Bulletin of the Chemical Society of Japan, 1994 , vol. 67, # 10 p. 2838 - 2849
Methanol structure

Methanol

CAS#:67-56-1

carbon monoxide structure

carbon monoxide

CAS#:201230-82-2

Propargyl alcohol structure

Propargyl alcohol

CAS#:107-19-7

~13%

Methyl 4-hydroxy-2-butynoate Structure

Methyl 4-hydrox...

CAS#:31555-05-2

Literature: Trofimov; Mal'kina; Gritsa; Skvortsov; Stankevich; Sokolyanskaya Russian Journal of General Chemistry, 1996 , vol. 66, # 1 p. 102 - 106
Methyl 4-(tetrahydro-2H-pyran-2-yloxy)-2-butynoate structure

Methyl 4-(tetra...

CAS#:69511-49-5

~%

tetrahydro-2-methoxy-2H-pyran structure

tetrahydro-2-me...

CAS#:6581-66-4

Methyl 4-hydroxy-2-butynoate Structure

Methyl 4-hydrox...

CAS#:31555-05-2

Literature: Canadian Journal of Chemistry, , vol. 58, # 23 p. 2550 - 2561
2-(propargyloxy)tetrahydropyran structure

2-(propargyloxy...

CAS#:6089-04-9

N/A structure

N/A

CAS#:15719-64-9

~%

Methyl 4-hydroxy-2-butynoate Structure

Methyl 4-hydrox...

CAS#:31555-05-2

Literature: Journal of the Chemical Society, , p. 3646,3649
diazomethane structure

diazomethane

CAS#:186581-53-3

4-Hydroxybut-2-ynoic acid structure

4-Hydroxybut-2-...

CAS#:7218-52-2

~%

Methyl 4-hydroxy-2-butynoate Structure

Methyl 4-hydrox...

CAS#:31555-05-2

Literature: Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 21, p. 1706 - 1711 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , vol. 21, # 8 p. 1763 - 1769

 Customs

HS Code 2918199090
Summary 2918199090 other carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

 Synonyms

hydroxymethylpropargylic methyl ester
methyl 4-hydroxy-2-but-2-ynoate
methyl 3-hydroxy-2-butynoate
4-hydroxybut-2-ynoic acid methyl ester
Methyl 4-hydroxy-2-butynoate
2-Butynoic acid, 4-hydroxy-, methyl ester
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