Chemical identity

Dexamethasone Sodium Phosphate EP Impurity B/ Betamethasone Phosphate

CAS 360-63-4 · C22H30FO8P

01Identity

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

Lazychem IDLC-12574
PubChem CID107782
NameDexamethasone Sodium Phosphate EP Impurity B/ Betamethasone Phosphate
CAS RN360-63-4
Molecular formulaC22H30FO8P
Molecular weight472.45 g/mol
IUPAC name9-fluoro-11β,17-dihydroxy-16β-methyl-3,20-dioxopregna- 1,4-dien-21-yl dihydrogen phosphate
InChIKeyVQODGRNSFPNSQE-DVTGEIKXSA-N

02Structure identifiers

2D structurePubChem CID 107782
Two-dimensional chemical structure of Dexamethasone Sodium Phosphate EP Impurity B/ Betamethasone Phosphate, CAS 360-63-4
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 8 defined stereocentres, contains at least one halogen atom. These statements are calculated from the published structure string.

Defined stereocentres8
Unassigned stereocentres0
Ring count4
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC[C@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@@]4([C@]3([C@H](C[C@@]2([C@]1(C(=O)COP(=O)(O)O)O)C)O)F)C
InChINot listed
Formula from structureC22H30FO8P
Molecular weight from structure472.45 g/mol

03Stereochemistry

The published structure contains 8 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres8Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 256Before 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 360-63-4 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 360-63-4 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

Dexamethasone

View API and impurity family

Other names

  • Dexamethasone Sodium Phosphate EP Impurity B
  • Betamethasone 21-phosphate
  • BETAMETHASONE PHOSPHORIC ACID
  • [2-[(8S, 9R, 10S, 11S, 13S, 14S, 16S, 17R)-9-fluoro-11, 17-dihydroxy-10, 13, 16-trimethyl-3-oxo-6, 7, 8, 11, 12, 14, 15, 16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] dihydrogen phosphate
  • Betamethasone 21-(dihydrogen phosphate)
  • (11beta, 16beta)-9-fluoro-11, 17-dihydroxy-16-methyl-3, 20-dioxopregna-1, 4-dien-21-yl dihydrogen phosphate
  • Betamethasone 21-phosphoric acid
  • Pregna-1, 4-diene-3, 20-dione, 9-fluoro-11, 17-dihydroxy-16-methyl-21-(phosphonooxy)-, (11beta, 16beta)-
  • Pregna-1, 4-diene-3, 20-dione, 9-fluoro-11-beta, 17, 21-trihydroxy-16-beta-methyl-, 21-(dihydrogen phosphate)
  • {2-[(1R, 2S, 3aS, 3bS, 9aS, 9bR, 10S, 11aS)-9b-fluoro-1, 10-dihydroxy-2, 9a, 11a-trimethyl-7-oxo-1H, 2H, 3H, 3aH, 3bH, 4H, 5H, 7H, 9aH, 9bH, 10H, 11H, 11aH-cyclopenta[a]phenanthren-1-yl]-2-oxoethoxy}phosphonic acid
  • Betamethasone Phosphate
  • Betamethasone Dihydrogen Phosphate

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