Chemical identity

Methyldopa EP Impurity C

CAS 39948-18-0 · C12H17NO4

01Identity

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

Lazychem IDLC-20099
PubChem CID195139
NameMethyldopa EP Impurity C
CAS RN39948-18-0
Molecular formulaC12H17NO4
Molecular weight239.27 g/mol
IUPAC name(2S)-2-amino-3-(3,4-dimethoxyphenyl)-2- methylpropanoic acid
InChIKeyQCCQWLWXLUTSAK-LBPRGKRZSA-N

02Structure identifiers

2D structurePubChem CID 195139
Two-dimensional chemical structure of Methyldopa EP Impurity C, CAS 39948-18-0
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)OC)OC)(C(=O)O)N
InChINot listed
Formula from structureC12H17NO4
Molecular weight from structure239.27 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 39948-18-0 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 39948-18-0 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

Methyldopa

View API and impurity family

Other names

  • 3-Methoxy-O,alpha-dimethyl-L-tyrosine
  • 39948-18-0
  • (2S)-2-amino-3-(3,4-dimethoxyphenyl)-2-methylpropanoic acid
  • UNII-X099OP8549
  • EINECS 254-711-8
  • L-3,4-DIMETHOXY-ALPHA-METHYLPHENYLALANINE
  • X099OP8549
  • 3,4-DIMETHOXYMETHYLDOPA
  • 3,4-O,O-DIMETHYLMETHYLDOPA
  • METHYLDOPA IMPURITY C [EP IMPURITY]
  • L-TYROSINE, 3-METHOXY-O,.ALPHA.-DIMETHYL-
  • RefChem:94617

Related records from the same parent family

No related records are linked by parent name.

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