Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Sourcing D-Tryptophan?
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Sourcing D-Tryptophan?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
D-Tryptophan is an essential amino acid that appears as a white solid. It is used as a dietary supplement and in nutrition research.
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 D-Tryptophan (CAS 153-94-6) 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.
(2R)-2-amino-3-(1H-indol-3-yl)propanoic acid
QIVBCDIJIAJPQS-SECBINFHSA-N
C1=CC=C2C(=C1)C(=CN2)C[C@H](C(=O)O)N