Chemical identity

Pioglitazone EP Impurity A

CAS 625853-74-9 · C19H20N2O4S

01Identity

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

Lazychem IDLC-25325
PubChem CID29981983
NamePioglitazone EP Impurity A
CAS RN625853-74-9
Molecular formulaC19H20N2O4S
Molecular weight372.44 g/mol
IUPAC name(5RS)-5-[[4-[2-(5-ethylpyridin-2-yl)ethoxy]- phenyl]methyl]-5-hydroxythiazolidine-2,4-dione OR (±)-5-{4-[2-(5-Ethylpyridin-2-yl)ethoxy]benzyl}-5-hydroxythiazolidine-2,4-dione.
InChIKeyHDKWBDGQTUQSTO-LJQANCHMSA-N

02Structure identifiers

2D structurePubChem CID 29981983
Two-dimensional chemical structure of Pioglitazone EP Impurity A, CAS 625853-74-9
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
SMILESCCC1=CN=C(C=C1)CCOC2=CC=C(C=C2)C[C@@]3(C(=O)NC(=O)S3)O
InChINot listed
Formula from structureC19H20N2O4S
Molecular weight from structure372.44 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 625853-74-9 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 625853-74-9 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

Pioglitazone

View API and impurity family

Other names

  • 5-Hydroxy Pioglitazone Impurity
  • Pioglitazone 5-Hydroxy Metabolite
  • (±)-5-{4-[2-(5-Ethylpyridin-2-yl)ethoxy]benzyl}-5-hydroxythiazolidine-2,4-dione
  • Hydroxy Pioglitazone

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