Chemical identity

Ramipril EP Impurity L / Ramipril Hydroxy Diketopiperazine

CAS 1309040-96-7 · C23H30N2O5

01Identity

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

Lazychem IDLC-26710
PubChem CID72942014
NameRamipril EP Impurity L / Ramipril Hydroxy Diketopiperazine
CAS RN1309040-96-7
Molecular formulaC23H30N2O5
Molecular weight414.49 g/mol
IUPAC nameethyl (S)-2-((3S,5aS,8aS,9aS)-9a-hydroxy-3-methyl-1,4-dioxodecahydro-2H-cyclopenta[4,5]pyrrolo[1,2-a]pyrazin-2-yl)-4-phenylbutanoate
InChIKeyVLBAUIKFYUTIDF-PXMVHEFSSA-N

02Structure identifiers

2D structurePubChem CID 72942014
Two-dimensional chemical structure of Ramipril EP Impurity L / Ramipril Hydroxy Diketopiperazine, CAS 1309040-96-7
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 4 rings, includes aromatic atoms, includes aliphatic carbon, has 5 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres5
Unassigned stereocentres0
Ring count4
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCCOC(=O)[C@H](CCC1=CC=CC=C1)N2[C@H](C(=O)N3[C@H]4CCC[C@H]4C[C@@]3(C2=O)O)C
InChINot listed
Formula from structureC23H30N2O5
Molecular weight from structure414.49 g/mol

03Stereochemistry

The published structure contains 5 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres5Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 32Before 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 1309040-96-7 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 1309040-96-7 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

Ramipril

View API and impurity family

Other names

  • Ramipril EP Impurity L
  • Ramipril Hydroxy Diketopiperazine
  • Ethyl (2S)-2-((3S, 5aS, 8aS)-9-Hydroxy-3-methyl-1, 4-dioxodecahydro-2H-cyclopenta[4, 5]pyrrolo[1, 2-a]pyrazin-2-yl)-4-phenylbutanoate
  • 1309040-96-7
  • G1380TES6X
  • ethyl (2S)-2-[(2S,6S,8S,11S)-8-hydroxy-11-methyl-9,12-dioxo-1,10-diazatricyclo[6.4.0.02,6]dodecan-10-yl]-4-phenylbutanoate
  • Ethyl (2S)-2-((3S,5aS,8aS,9aS)-9a-hydroxy-3-methyl-1,4-dioxodecahydro-2H-cyclopenta(4,5)pyrrolo(1,2-a)pyrazin-2-yl)-4-phenylbutanoate
  • 9-Hydroxy Ramipril Diketopiperazine
  • 9a-Hydroxy ramipril diketopiperazine
  • Ramipril impurity L [EP]
  • UNII-G1380TES6X
  • 2H-Cyclopenta(4,5)pyrrolo(1,2-a)pyrazine-2-acetic acid, decahydro-9a-hydroxy-3-methyl-1,4-dioxo-alpha-(2-phenylethyl)-, ethyl ester, (alphaS,3S,5aS,8aS,9aS)-

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