Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Sourcing 4-Hydroxyindole?
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Sourcing 4-Hydroxyindole?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
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.
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.
The international HS code for 4-Hydroxyindole (CAS 2380-94-1) is 2933.99.
2933.99
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.
1H-indol-4-ol
NLMQHXUGJIAKTH-UHFFFAOYSA-N
C1=CC2=C(C=CN2)C(=C1)O