Chemical identity

Carbidopa EP impurity B/ α-Methyldopa Methyl Ester

CAS 18181-08-3 · C11H15NO4

01Identity

Identifiers and names for this exact compound. Empty fields are left unassigned.

Lazychem IDLC-09432
PubChem CID28934
NameCarbidopa EP impurity B/ α-Methyldopa Methyl Ester
CAS RN18181-08-3
Molecular formulaC11H15NO4
Molecular weight225.24 g/mol
IUPAC nameMethyl (2S)-2-Amino-3-(3,4-dihydroxyphenyl)-2 -Methylpropanoate
InChIKeyMKFJJXIMFTXSEM-NSHDSACASA-N

02Structure identifiers

2D structurePubChem CID 28934
Two-dimensional chemical structure of Carbidopa EP impurity B/ α-Methyldopa Methyl Ester, CAS 18181-08-3
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 1 ring, includes aromatic atoms, includes aliphatic carbon, has 1 defined stereocentre. These statements are calculated from the published structure string.

Defined stereocentres1
Unassigned stereocentres0
Ring count1
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC[C@](CC1=CC(=C(C=C1)O)O)(C(=O)OC)N
InChINot listed
Formula from structureC11H15NO4
Molecular weight from structure225.24 g/mol

03Stereochemistry

The published structure contains 1 defined and 0 unassigned tetrahedral stereocentre. The exact wedge and dash depiction is shown above.

Defined centres1Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 2Before symmetry reduction

Published same-connectivity configurations

1 record

These records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

No additional structure-linked configuration with the same connectivity is currently present in the LazyChem dataset.

Scope: The mathematical 2^n value is only an upper bound. Symmetry and other stereogenic elements can change the number of distinct stereoisomers. A hypothetical configuration is not published as a compound record without a verified structure identity.

04India status for this compound

These results apply only to this exact compound name and CAS number. Confirm the current official instruments before making a regulatory decision.

NDPS / RCSNO EXACT MATCH FOUNDCAS 18181-08-3 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 18181-08-3 has no exact match in the reviewed SCOMET list.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

05Names and relationships

Associated parent compound

Carbidopa

View API and impurity family

Other names

  • Carbidopa EP Impurity B
  • α-Methyldopa Methyl Ester
  • Alpha-methyl-melevodopa
  • methyl (2S)-2-amino-3-(3,4-dihydroxyphenyl)-2-methylpropanoate
  • 49ARC1V0F1
  • 3-Hydroxy-alpha-methyl-L-tyrosine methyl ester
  • CARBIDOPA IMPURITY B [EP IMPURITY]
  • RefChem:555857
  • 3-HYDROXY-ALPHA-METHYL-METHYL TYROSINATE
  • 895-229-3
  • 18181-08-3
  • alpha-Methyldopa methyl ester

Related records from the same parent family

06Documented history

Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.

No dated history available

No verified discovery, first report, occurrence, use or issue event is currently available for this identity.

07Sources