Chemical identity

Levodopa EP Impurity B

CAS 60-18-4 · C9H11NO3

01Identity

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

Lazychem IDLC-18490
PubChem CID6057
NameLevodopa EP Impurity B
CAS RN60-18-4
Molecular formulaC9H11NO3
Molecular weight181.07 g/mol
IUPAC name(2S)-2-Amino-3-(4-hydroxyphenyl)propanoic acid
InChIKeyOUYCCCASQSFEME-QMMMGPOBSA-N

02Structure identifiers

2D structurePubChem CID 6057
Two-dimensional chemical structure of Levodopa EP Impurity B, CAS 60-18-4
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
SMILESC1=CC(=CC=C1C[C@@H](C(=O)O)N)O
InChINot listed
Formula from structureC9H11NO3
Molecular weight from structure181.07 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 60-18-4 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 60-18-4 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

Levodopa; Phenylalanine; Tyrosine

View API and impurity family

Other names

  • 4-Hydroxy-L-phenylalanine
  • 2-Amino-3-(p-hydroxyphenyl)propionic acid
  • Phenylalanine EP Impurity C
  • L-Tyrosine

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