Chemical identity

Pemetrexed EP Impurity E / Pemetrexed BP Impurity E / Pemetrexed R-Isomer / (D)-Pemetrexed

CAS 182009-04-7 · C20H21N5O6

01Identity

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

Lazychem IDLC-24819
PubChem CID135565230
NamePemetrexed EP Impurity E / Pemetrexed BP Impurity E / Pemetrexed R-Isomer / (D)-Pemetrexed
CAS RN182009-04-7
Molecular formulaC20H21N5O6
Molecular weight427.41 g/mol
IUPAC name(2R)-2-(4-(2-(2-amino-4-oxo-4,7-dihydo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl)benzoyl)amino)pentanedioic acid
InChIKeyWBXPDJSOTKVWSJ-CYBMUJFWSA-N

02Structure identifiers

2D structurePubChem CID 135565230
Two-dimensional chemical structure of Pemetrexed EP Impurity E / Pemetrexed BP Impurity E / Pemetrexed R-Isomer / (D)-Pemetrexed, CAS 182009-04-7
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 3 rings, includes aromatic atoms, includes aliphatic carbon, has 1 defined stereocentre. These statements are calculated from the published structure string.

Defined stereocentres1
Unassigned stereocentres0
Ring count3
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC1=CC(=CC=C1CCC2=CNC3=C2C(=O)NC(=N3)N)C(=O)N[C@H](CCC(=O)O)C(=O)O
InChINot listed
Formula from structureC20H21N5O6
Molecular weight from structure427.41 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

2 records

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.

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 182009-04-7 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 182009-04-7 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

Pemetrexed

View API and impurity family

Other names

  • Pemetrexed EP Impurity E
  • Pemetrexed R-Isomer / Pemetrexed BP Impurity E /(D)-Pemetrexed
  • Pemetrexed, (R)-
  • 182009-04-7
  • (R)-Pemetrexed
  • (2R)-2-{[4-(2-{2-amino-4-oxo-3H,4H,7H-pyrrolo[2,3-d]pyrimidin-5-yl}ethyl)phenyl]formamido}pentanedioic acid
  • Pemetrexed (R) enantiomer
  • FG8Q47888S
  • (2R)-2-((4-(2-(2-Amino-4-oxo-4,7-dihydro-1H-pyrrolo(2,3-d)pyrimidin-5-yl)ethyl)benzoyl)amino)pentanedioic acid
  • (4-(2-(2-Amino-4-oxo-4,7-dihydro-3H-pyrrolo(2,3-d)pyrimidin-5-yl)ethyl)benzoyl)-D-glutamic acid
  • D-Glutamic acid, N-(4-(2-(2-amino-4,7-dihydro-4-oxo-3H-pyrrolo(2,3-d)pyrimidin-5-yl)ethyl)benzoyl)-
  • PEMETREXED DISODIUM HEPTAHYDRATE IMPURITY E [EP IMPURITY]

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