C4H10O
74.12 g/mol
Pharmaceutical IntermediateWarning
(S)-(+)-2-butanol
CAS4221-99-2EC224-168-1
Category
Pharmaceutical Intermediate
Compound Class
Alcohol
Primary Use
Pharmaceutical Intermediate
(S)-(+)-2-Butanol is the (2S) enantiomer of butan-2-ol, a secondary alcohol. It is used as a pharmaceutical intermediate in chemical synthesis.
Pharmaceutical intermediate
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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Related Compounds
ReferenceSame Category
Ethylmethyl-carbamic chloride
CAS42252-34-6
pharmaceutical intermediate
ReferenceSame Category
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pharmaceutical intermediate
ReferenceSame Category
Dimethyl 5-(bromomethyl)isophthalate
CAS42268-88-2
pharmaceutical intermediate
ReferenceSame Category
N-(4-Cyanophenyl)glycine
CAS42288-26-6
pharmaceutical intermediate
Referencestereoisomer of
2-butanol
CAS78-92-2
Solvent and chemical intermediate
Referencestereoisomer of
(²H₉)Butan-2-ol
CAS1202864-22-9
research compound
Referencestereoisomer of
(R)-2-Butanol
CAS14898-79-4
pharmaceutical intermediate
Safety Reference
Warning
H226Flammable liquid and vapour
H319Causes serious eye irritation
H335May cause respiratory irritation
H336May cause drowsiness or dizziness
Customs Tariff Classification
The international HS code for (S)-(+)-2-butanol (CAS 4221-99-2) is 2905.14.
HS code (international, 6-digit)
2905.14
EU CN code (8-digit)
2905 14 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
(2S)-butan-2-ol
InChIKey
BTANRVKWQNVYAZ-BYPYZUCNSA-N
SMILES
CC[C@H](C)O
Synonyms (13)
- (1S)-1-methylpropanol
- (2S)-2-butanol
- (2S)-butan-2-ol
- (5)-(+)-sec-butanol
- (S)-(+)-2-butanol
- (S)-(+)-sec-Butyl alcohol
- (S)-Butan-2-ol
- (s)-(+)-sec-butanol
- 2-Butanol, (+)-
- 2-Butanol, (2S)-
- BUTYL ALCOHOL D-FORM
- D-BUTANOL
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