Safety Reference
Warning
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
Sourcing Fmoc-L-Tyr(tBu)-OH?
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Fmoc-4-[2-(Boc-amino)ethoxy]-L-phenylalanine
pharmaceutical intermediate
Sourcing Fmoc-L-Tyr(tBu)-OH?
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Fmoc-L-Tyr(tBu)-OH is a derivative of the amino acid tyrosine, modified with a fluorenylmethoxycarbonyl (Fmoc) protecting group on the amino function and a tert-butyl (tBu) group on the phenolic hydroxyl. It serves as a building block in solid-phase peptide synthesis, enabling the sequential construction of peptides with controlled side-chain protection.
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 Fmoc-L-Tyr(tBu)-OH (CAS 71989-38-3) is 2924.29.
2924.29
2924 29 70
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
(2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-[4-[(2-methylpropan-2-yl)oxy]phenyl]propanoic acid
JAUKCFULLJFBFN-VWLOTQADSA-N
CC(C)(C)OC1=CC=C(C=C1)C[C@@H](C(=O)O)NC(=O)OCC2C3=CC=CC=C3C4=CC=CC=C24