Safety Reference
Warning
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
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N-Fmoc-L-Asparagine
pharmaceutical intermediate
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This compound is a protected amino acid derivative used primarily as a building block in peptide synthesis. It features a fluorenylmethoxycarbonyl (Fmoc) protecting group and tert-butyl ester moieties, which allow selective deprotection during solid-phase peptide assembly.
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-tert-Butyl hydrogen N-((9H-fluoren-9-ylmethoxy)carbonyl)-L-aspartate (CAS 71989-14-5) 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.
2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid
FODJWPHPWBKDON-UHFFFAOYSA-N
CC(C)(C)OC(=O)CC(C(=O)O)NC(=O)OCC1C2=CC=CC=C2C3=CC=CC=C13