C14H22ClNO3
287.78 g/mol
Pharmaceutical IntermediateDanger
Methyl O-tert-butyl-L-tyrosinate hydrochloride
CAS51482-39-4EC257-234-3
Category
Pharmaceutical Intermediate
Compound Class
Ester
Primary Use
Pharmaceutical Intermediate
Methyl O-tert-butyl-L-tyrosinate hydrochloride is a protected derivative of the amino acid tyrosine, commonly used in peptide synthesis. It features a tert-butyl ether protecting group on the phenolic oxygen and a methyl ester on the carboxyl group, supplied as a hydrochloride salt.
Reagent for solid-phase peptide synthesisProtected building block for tyrosine-containing peptides
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.
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Related Compounds
SimilarStructure SimilarSimilarity 0.73
O-tert-butyl-L-tyrosine
CAS18822-59-8
pharmaceutical intermediate
ReferenceSame Category
4-Hydroxypyridine-3-sulfonic acid
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pharmaceutical intermediate
ReferenceSame Category
Boc-6-Ahx-OSu
CAS51513-80-5
pharmaceutical intermediate
ReferenceSame Category
O-tert-Butyl-L-serine tert-butyl ester hydrochloride
CAS51537-21-4
pharmaceutical intermediate
ReferenceSame Category
(−)-epichlorohydrin
CAS51594-55-9
pharmaceutical intermediate
Safety Reference
Danger
H319Causes serious eye irritation
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
Customs Tariff Classification
The international HS code for Methyl O-tert-butyl-L-tyrosinate hydrochloride (CAS 51482-39-4) is 2922.50.
HS code (international, 6-digit)
2922.50
EU CN code (8-digit)
2922 50 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
methyl (2S)-2-amino-3-[4-[(2-methylpropan-2-yl)oxy]phenyl]propanoate;hydrochloride
InChIKey
PAFVAMWJVIIMQK-YDALLXLXSA-N
SMILES
CC(C)(C)OC1=CC=C(C=C1)C[C@@H](C(=O)OC)N.Cl
Synonyms (14)
- H-Tyr(But)-OMe.HCl
- H-Tyr(tBu)-Ome.HCl
- H-Tyr(tbu)-ome hydrochloride
- L-Tyr(tBu)-OMe⋅HCl
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