Chemical identity

Protirelin EP Impurity E / Cyclo(L-histidyl-L-proline)

CAS 53109-32-3 · C11H14N4O2

01Identity

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

Lazychem IDLC-26252
PubChem CID449094
NameProtirelin EP Impurity E / Cyclo(L-histidyl-L-proline)
CAS RN53109-32-3
Molecular formulaC11H14N4O2
Molecular weight234.26 g/mol
IUPAC name(3S,8aS)-3-(1H-Imidazol-4-ylmethyl)hexahydropyrrolo[1,2-a]pyrazine-1,4-dione
InChIKeyNAKUGCPAQTUSBE-IUCAKERBSA-N

02Structure identifiers

2D structurePubChem CID 449094
Two-dimensional chemical structure of Protirelin EP Impurity E / Cyclo(L-histidyl-L-proline), CAS 53109-32-3
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 2 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres2
Unassigned stereocentres0
Ring count3
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC1C[C@H]2C(=O)N[C@H](C(=O)N2C1)CC3=CN=CN3
InChINot listed
Formula from structureC11H14N4O2
Molecular weight from structure234.26 g/mol

03Stereochemistry

The published structure contains 2 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres2Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 4Before 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 53109-32-3 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 53109-32-3 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

Protirelin

View API and impurity family

Other names

  • Protirelin EP Impurity E
  • Histidylproline diketopiperazine
  • (3S, 8aS)-3-(1H-Imidazol-4-ylmethyl)hexahydropyrrolo[1, 2-a]pyrazine-1, 4-dione
  • Cyclo(L-histidyl-L-proline)

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