C8H7NO
133.15 g/mol
Pharmaceutical IntermediateWarning
4-Hydroxyindole
CAS2380-94-1EC219-177-2
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
4-Hydroxyindole is an indole derivative used as a pharmaceutical intermediate. It serves as a key precursor in the chemical synthesis of psilocybin, a naturally occurring tryptamine alkaloid with serotonergic activity found in certain mushrooms.
Precursor for psilocybin synthesisPharmaceutical 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
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pharmaceutical intermediate
ReferenceSame Category
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pharmaceutical intermediate
ReferenceSame Category
5-Chloro-2-hydroxy-4,6-dimethyl-nicotinonitrile
CAS23819-92-3
pharmaceutical intermediate
ReferenceSame Category
Tert-Butyl (S)-(3,3-difluoropiperidin-4-yl)carbamate
CAS2382503-76-4
pharmaceutical intermediate
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-Hydroxyindole (CAS 2380-94-1) is 2933.99.
HS code (international, 6-digit)
2933.99
EU CN code (8-digit)
2933 99 80
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
1H-indol-4-ol
InChIKey
NLMQHXUGJIAKTH-UHFFFAOYSA-N
SMILES
C1=CC2=C(C=CN2)C(=C1)O
Synonyms (13)
- 1H-Indol-4-ol; Pindolol Imp. E (EP); Pindolol Impurity E
- Pindolol EP Impurity E
- 1H-Indol-4-ol
- 1h-indole-4-ol
- 4- HYDROXYCARBAZOLE
- 4-Hdroxyindole
- 4-Hydroxyindole
- 4-Hydroxyindole (Standard)
- 4-Indolol
- 4-hydroxy-1h-indole
- 4-hydroxyindole, 18
- PINDOLOL IMPURITY E
- hydroxyindoles
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