C21H29NO2
327.5 g/mol
APIDanger
Butorphanol
CAS42408-82-2EC255-808-8
Category
API
Compound Class
Amine
Primary Use
Pharmaceutical Raw Material
Butorphanol is a semi-synthetic opioid agonist-antagonist analgesic derived from levorphanol. It is primarily used for the relief of moderate to severe pain through its action as a mu-opioid and kappa-opioid receptor agonist, and also has antitussive properties.
pharmaceutical raw material for analgesic productsactive ingredient in pain management formulationsantitussive agent in cough suppressant preparations
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
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PUBCHEM_71750076
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Referencestereoisomer of
(-)-Butorphanol-d6
CAS1287084-97-2
research compound
Safety Reference
Danger
H302Harmful if swallowed
H317May cause an allergic skin reaction
H332Harmful if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
Customs Tariff Classification
The international HS code for Butorphanol (CAS 42408-82-2) is 2933.49.
HS code (international, 6-digit)
2933.49
EU CN code (8-digit)
2933 49 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
(1S,9R,10S)-17-(cyclobutylmethyl)-17-azatetracyclo[7.5.3.01,10.02,7]heptadeca-2(7),3,5-triene-4,10-diol
InChIKey
IFKLAQQSCNILHL-QHAWAJNXSA-N
SMILES
C1CC[C@]2([C@H]3CC4=C([C@]2(C1)CCN3CC5CCC5)C=C(C=C4)O)O
Synonyms (16)
- Butorfanol [INN-Spanish]
- Butorphanol (USAN/INN)
- Butorphanolum [INN-Latin]
- Butorfanol
- Butorphanol (free base)
- Butorphanolum
- DEA No. 9720
- butorfanolo
- butorphanol
- l-BC 2627
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