Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H336May cause drowsiness or dizziness
Sourcing 4-Amino-3-phenylbutanoic acid?
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Sourcing 4-Amino-3-phenylbutanoic acid?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
4-Amino-3-phenylbutanoic acid is a central nervous system depressant with anxiolytic effects, commonly known as phenibut. It is used as an active pharmaceutical ingredient in products intended to address anxiety, insomnia, and other indications.
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-Amino-3-phenylbutanoic acid (CAS 1078-21-3) is 2922.49.
2922.49
2922 49 85
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
4-amino-3-phenylbutanoic acid
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