Chemical identity

16-Dehydroprogesterone

CAS 1096-38-4 · C21H28O2

01Identity

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

Lazychem IDLC-04208
PubChem CID101964
Name16-Dehydroprogesterone
CAS RN1096-38-4
Molecular formulaC21H28O2
Molecular weight312.45 g/mol
IUPAC name(8R,9S,10R,13S,14S)-17-acetyl-10,13-dimethyl-6,7,8,9,10,11,12,13,14,15-decahydro-1H-cyclopenta[a]phenanthren-3(2H)-one
InChIKeyVRRHHTISESGZFN-RKFFNLMFSA-N

02Structure identifiers

2D structurePubChem CID 101964
Two-dimensional chemical structure of 16-Dehydroprogesterone, CAS 1096-38-4
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 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
SMILESCC(=O)C1=CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4=CC(=O)CC[C@]34C)C
InChINot listed
Formula from structureC21H28O2
Molecular weight from structure312.45 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 1096-38-4 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 1096-38-4 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

Progesterone

View API and impurity family

Other names

  • Pregna-4, 16-diene-3, 20-dione
  • 16, 17-Didehydroprogesterone
  • 3, 20-Dioxopregna-4, 16-diene
  • 4, 16-Pregnadiene-3, 20-dione
  • delta4, 16-Pregnadiene-3, 20-dione

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