Chemical identity

Methylprednisolone Acetate EP Impurity A

CAS 93963-74-7 · C24H34O6

01Identity

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

Lazychem IDLC-20120
PubChem CID93484091
NameMethylprednisolone Acetate EP Impurity A
CAS RN93963-74-7
Molecular formulaC24H34O6
Molecular weight418.52 g/mol
IUPAC name(20R)-11β,17,20-Trihydroxy-6α-methyl-3-oxopregna-1,4-dien-21-yl Acetate
InChIKeyPISINOWVXAIVLQ-OCKJIAMASA-N

02Structure identifiers

2D structurePubChem CID 93484091
Two-dimensional chemical structure of Methylprednisolone Acetate EP Impurity A, CAS 93963-74-7
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 4 rings, includes aliphatic carbon, has 9 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres9
Unassigned stereocentres0
Ring count4
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC[C@H]1C[C@H]2[C@@H]3CC[C@@]([C@]3(C[C@@H]([C@@H]2[C@@]4(C1=CC(=O)C=C4)C)O)C)([C@@H](COC(=O)C)O)O
InChINot listed
Formula from structureC24H34O6
Molecular weight from structure418.52 g/mol

03Stereochemistry

The published structure contains 9 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres9Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 512Before 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 93963-74-7 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 93963-74-7 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

Methylprednisolone Acetate

View API and impurity family

Other names

  • 6alpha-Methyl-20(R)-hydroxy Prednisolone 21-Acetate
  • 93963-74-7
  • Pregna-1,4-dien-3-one,21-(acetyloxy)-11,17,20-trihydroxy-6-methyl-, (6a,11b,20R)-(9CI)
  • [(2R)-2-[(6S,8S,9S,10R,11S,13S,14S,17R)-11,17-dihydroxy-6,10,13-trimethyl-3-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-yl]-2-hydroxyethyl] acetate
  • 6?-Methyl-20(R)-hydroxy Prednisolone 21-Acetate
  • Methylprednisolone Acetate EP Impurity A
  • Methylprednisolone Acetate EP Impurity A (20R Isomer)
  • DTXSID001131519
  • NS00063591
  • (20R)-11,17,20-Trihydroxy-6alpha-methyl-3-oxopregna-1,4-dien-21-yl acetate
  • (20RS)-11
  • A,17,20-trihydroxy-6

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