C5H8O
84.12 g/mol
Pharmaceutical IntermediateDanger
2-METHYL-3-BUTYN-2-OL
CAS115-19-5EC204-070-5
Category
Pharmaceutical Intermediate
Compound Class
Alcohol
Primary Use
Pharmaceutical Intermediate
2-Methyl-3-butyn-2-ol is a colorless to straw yellow liquid. It is commonly used as a pharmaceutical intermediate and laboratory reagent.
pharmaceutical intermediatelaboratory reagentwood treatment
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Safety Reference
Danger
H225Highly flammable liquid and vapour
H226Flammable liquid and vapour
H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation
H336May cause drowsiness or dizziness
H361Suspected of damaging fertility or the unborn child
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for 2-METHYL-3-BUTYN-2-OL (CAS 115-19-5) is 2905.29.
HS code (international, 6-digit)
2905.29
EU CN code (8-digit)
2905 29 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-methylbut-3-yn-2-ol
InChIKey
CEBKHWWANWSNTI-UHFFFAOYSA-N
SMILES
CC(C)(C#C)O
Synonyms (40)
- 1,1-Dimethyl-2-propynol
- 1,1-Dimethylpropargyl alcohol
- 1,1-Dimethylpropynol
- 1,1-dimethyl-2-propyn-1-ol
- 1-Butyn-3-ol, 3-methyl-
- 2-Hydroxy-2-methyl-3-butyne
- 2-METHYL-3-BUTYN-2-OL
- 2-Methyl-2-butynol
- 2-Methyl-2-hydroxy-3-butyne
- 2-Methylbut-3-in-2-ol
- 2-Methylbut-3-yn-2-ol
- 2-Methylbutyn-3-ol-2
- 2-methyl-3-butin-2-ol
- 2-methyl-3-butyne-2-ol
- 2-methylbutan-3-yn-2-ol
- 3-Butyn-2-ol, 2-methyl-
- 3-Hydroxy-3-methyl-1-butyne
- 3-Methyl-1-butyn-3-ol
- 3-Methyl-butin-(1)-ol-(3)
- 3-Methyl-butyn-3-ol
- 3-Methylbutynol
- 3-hydroxy-3-methyl-1-butine
- 3-hydroxy-3-methylbutyne
- 3-methyl-1-butin-3-ol
- 3-methyl-1-butyne-3-ol
- 3-methyl-3-hydroxy-1-butyne
- Carbavane
- Carbavane [Russian]
- Dimethylacetylenecarbinol
- Dimethylacetylenylcarbinol
- Dimethylethynylcarbinol
- Dimethylethynylmethanol
- Ethynyldimethylcarbinol
- METHYL-3-BUTYN-2-OL, 2-
- dimethyl propargyl alcohol
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