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Home/Compounds/Pharmaceutical Intermediate/(2S)-4-Oxo-1,2-pyrrolidinedicarboxylic acid 1,2-bis(1,1-dimethylethyl) ester
C14H23NO5
285.34 g/mol
Pharmaceutical IntermediateWarning

(S)-Di-tert-butyl 4-oxopyrrolidine-1,2-dicarboxylate

CAS166410-05-5EC807-593-2
Category
Pharmaceutical Intermediate
Compound Class
Ester
Primary Use
Pharmaceutical Intermediate

This compound is a protected ornithine-like intermediate featuring a 4-oxopyrrolidine ring with two tert-butoxycarbonyl (Boc) protecting groups. It is primarily used in the synthesis of proline derivatives and related chiral building blocks for pharmaceutical research and manufacturing.

Pharmaceutical intermediate for proline derivativesBuilding block in peptide and medicinal chemistry

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 0.82

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SimilarStructure SimilarSimilarity 0.76

N-Boc-4-oxo-L-proline

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SimilarStructure SimilarSimilarity 0.76

1-(tert-Butoxycarbonyl)-4-oxoproline

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1-tert-Butyl 2-methyl (2S)-2,5-dihydro-1H-pyrrole-1,2-dicarboxylate

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pharmaceutical intermediate

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Methyl cis-1-Boc-4-hydroxy-D-prolinate

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pharmaceutical intermediate

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N-Boc-trans-4-amino-L-proline methyl ester hydrochloride

CAS334999-32-5

pharmaceutical intermediate

Safety Reference

Harmful
Harmful
Environmental Hazard
Environmental Hazard
Warning
H317May cause an allergic skin reaction
H412Harmful to aquatic life with long lasting effects

Customs Tariff Classification

The international HS code for (S)-Di-tert-butyl 4-oxopyrrolidine-1,2-dicarboxylate (CAS 166410-05-5) is 2933.99.

HS code (international, 6-digit)

2933.99

EU CN code (8-digit)

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.

Identifiers
IUPAC Name

ditert-butyl (2S)-4-oxopyrrolidine-1,2-dicarboxylate

InChIKey

MPNWQUWKRDADHK-JTQLQIEISA-N

SMILES

CC(C)(C)OC(=O)[C@@H]1CC(=O)CN1C(=O)OC(C)(C)C

Synonyms (10)

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