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Home/Compounds/Pharmaceutical Intermediate/L-Leucine benzyl ester p-toluenesulfonate salt
C20H27NO5S
393.5 g/mol
Pharmaceutical Intermediate

O-Benzyl-L-leucine toluene-p-sulphonate

CAS1738-77-8EC217-095-1
Category
Pharmaceutical Intermediate
Compound Class
Amine
Primary Use
Pharmaceutical Intermediate

O-Benzyl-L-leucine toluene-p-sulphonate is a salt form of L-leucine benzyl ester with p-toluenesulfonic acid. It is primarily used as a pharmaceutical intermediate in peptide synthesis, serving as a protected amino acid derivative for laboratory and manufacturing applications.

Pharmaceutical intermediate for peptide synthesis

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

StrongSame Parent

Benzyl L-leucinate--hydrogen chloride (1/1)

CAS2462-35-3

pharmaceutical intermediate

ReferenceSame Category

3-Phenyl-L-alanine benzyl ester 4-toluenesulphonate

CAS1738-78-9

pharmaceutical intermediate

ReferenceSame Category

1,3-Oxathiolane-2-carboxylic acid, 5-(4-amino-2-oxo-1(2H)-pyrimidinyl)-, (2R,5S)-

CAS173829-09-9

pharmaceutical intermediate

ReferenceSame Category

5-Methylpyridine-3-boronic acid

CAS173999-18-3

pharmaceutical intermediate

ReferenceSame Category

(S)-2-hydroxyisovaleric acid

CAS17407-55-5

pharmaceutical intermediate

Customs Tariff Classification

The international HS code for O-Benzyl-L-leucine toluene-p-sulphonate (CAS 1738-77-8) is 2922.49.

HS code (international, 6-digit)

2922.49

EU CN code (8-digit)

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.

Identifiers
IUPAC Name

benzyl (2S)-2-amino-4-methylpentanoate;4-methylbenzenesulfonic acid

InChIKey

QTQGHKVYLQBJLO-YDALLXLXSA-N

SMILES

CC1=CC=C(C=C1)S(=O)(=O)O.CC(C)C[C@@H](C(=O)OCC1=CC=CC=C1)N

Synonyms (22)
  • H-Leu-OBzl . p-tosylate
  • H-Leu-OBzl TsOH
  • H-Leu-OBzl p-toluenesulfonate
  • H-Leu-OBzl.TosOH
  • L-Leu-OBzl.TosOH
  • Leu-OBzl TsOH
  • Leu-Obzl TosOH

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