C5H11NO2S
149.21 g/mol
APIWarning
DL-Penicillamine
CAS52-66-4EC200-147-2
Category
API
Compound Class
Amine
Primary Use
Pharmaceutical Raw Material
DL-Penicillamine is a non-proteinogenic alpha-amino acid that contains a thiol group and is structurally analogous to valine. It is used as an active pharmaceutical ingredient in pharmaceutical manufacturing.
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
ReferenceSame Category
Lynestrenol
CAS52-76-6
pharmaceutical raw material
ReferenceSame Category
Haloperidol
CAS52-86-8
pharmaceutical raw material
ReferenceSame Category
Diosmin
CAS520-27-4
pharmaceutical raw material
ReferenceSame Category
Apigenin
CAS520-36-5
pharmaceutical raw material
Referencestereoisomer of
D-penicillamine
CAS52-67-5
pharmaceutical raw material
Referencestereoisomer of
(+)-penicillamine
CAS1113-41-3
pharmaceutical raw material
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for DL-Penicillamine (CAS 52-66-4) is 2930.90.
HS code (international, 6-digit)
2930.90
EU CN code (8-digit)
2930 90 95
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
2-amino-3-methyl-3-sulfanylbutanoic acid
InChIKey
VVNCNSJFMMFHPL-UHFFFAOYSA-N
SMILES
CC(C)(C(C(=O)O)N)S
Synonyms (40)
- DL-DMC
- Bacampicillin Hydrochloride EP Impurity F
- Penicilamina [INN-Spanish]
- Penicillaminum [INN-Latin]
- (+-)-Penicillamine
- 3,3-Dimethyl-D-cysteine
- 3,3-Dimethyl-DL-cysteine
- 3,3-Dimethyl-L-cysteine
- 3-Mercapto-DL-valine
- 3-Mercaptovaline
- 3-Sulfanylvaline
- 3-Thio-D-valine
- Cysteine, 3,3-dimethyl-
- D-Mercaptovaline
- D-Penicilamine
- D-Penicyllamine
- DL-Penicillamine
- DL-Penicillamine (Standard)
- DL-Valine, 3-mercapto-
- DL-b-Mercaptovaline
- DL-beta-Mercaptovaline
- L-beta,beta-Dimethylcysteine
- PENICILLAMINE DL-FORM
- PENICILLAMINE, DL-
- Penicillamin
- Penicillamina
- Penicilllamine
- Valine, 3-mercapto-
- Valine, 3-mercapto-, DL-
- beta-Mercaptovaline
- beta-Thiovaline
- dl-beta,beta-Dimethylcysteine
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