
Chemical identity
16α-Methyl Prednisolone
CAS 10417-63-7 · C22H30O5
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-04221 |
|---|---|
| PubChem CID | 10429502 |
| Name | 16α-Methyl Prednisolone |
| CAS RN | 10417-63-7 |
| Molecular formula | C22H30O5 |
| Molecular weight | 374.47 g/mol |
| IUPAC name | (8S,9S,10R,11S,13S,14S,16R,17R)-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one |
| InChIKey | WNYLPFCKNQAAMB-PPUNREKOSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C22H30O5 |
|---|---|
| InChIKey | WNYLPFCKNQAAMB-PPUNREKOSA-N |
| Ring count | 4 |
| Defined stereocentres | 8 |
| Unassigned stereocentres | 0 |
| SMILES | C[C@@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@@]4([C@H]3[C@H](C[C@@]2([C@]1(C(=O)CO)O)C)O)C |
|---|---|
| InChI | InChI=1S/C22H30O5/c1-12-8-16-15-5-4-13-9-14(24)6-7-20(13,2)19(15)17(25)10-21(16,3)22(12,27)18(26)11-23/h6-7,9,12,15-17,19,23,25,27H,4-5,8,10-11H2,1-3H3/t12-,15+,16+,17+,19-,20+,21+,22+/m1/s1 |
03Stereochemistry
The published structure contains 8 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.
Published same-connectivity configurations
4 recordsThese records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.


11alpha,17,21-Trihydroxy-16beta-methylpregna-1,4-diene-3,20-dione
CAS Not listed
WNYLPFCKNQAAMB-OWUXUVPTSA-N
8 defined, 0 unassigned centres


Dexamethasone Desfluoro 11-Epimer / Prednisolone 16alpha-Methyl 11-Epimer
CAS 78761-59-8
WNYLPFCKNQAAMB-JPDWDDBRSA-N
8 defined, 0 unassigned centres
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 / RCS | NOT FOUND IN REVIEWED ENTRIES | CAS 10417-63-7 was not found in the reviewed exact-identity entries. Generic, class, analogue, salt and isomer provisions were not evaluated. |
|---|---|---|
| SCOMET | NOT FOUND IN REVIEWED CAS ENTRIES | CAS 10417-63-7 was not found in the reviewed exact-CAS mapping. Generic and analogue entries were not evaluated. |
- Narcotic Drugs and Psychotropic Substances Act, 1985, ScheduleDepartment of Revenue, Government of India · source version 1985-09-16
- Controlled-substances notifications and amendmentsDepartment of Revenue, Government of India · source version 2026-03-11
- Appendix 3, SCOMET ListDirectorate General of Foreign Trade, Government of India · source version 2024-09-02
05Names and relationships
Associated parent compound
Prednisolone
View API and impurity familyOther names
- 16I+--Methylprednisolone
- 16alpha-Methyl Prednisolone
- 16a-Methyl Prednisolone
- (8S,9S,10R,11S,13S,14S,16R,17R)-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-one
- Pregna-1,4-diene-3,20-dione, 11,17,21-trihydroxy-16-methyl-, (11ss,16a)-
- Pregna-1,4-diene-3,20-dione, 11ss,17,21-trihydroxy-16a-methyl- (7CI,8CI)
- (11ss,16a)-11,17,21-Trihydroxy-16-methylpregna-1,4-diene-3,20-dione
- 16a-Methylprednisolone
06Documented history
Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.
No verified discovery, first report, occurrence, use or issue event is currently available for this identity.
07Sources
- S01PubChem compound record, CID 10429502
Names and machine-readable chemical identity properties.
- S02NCBI website and molecular data policies
Reuse policy for NCBI molecular data. This page does not reproduce vendor descriptions or contributed narrative text.
- S03Narcotic Drugs and Psychotropic Substances Act, 1985, Schedule
Department of Revenue, Government of India. Used for the exact-compound India status shown on this page.
- S04Controlled-substances notifications and amendments
Department of Revenue, Government of India. Used for the exact-compound India status shown on this page.
- S05Appendix 3, SCOMET List
Directorate General of Foreign Trade, Government of India. Used for the exact-compound India status shown on this page.
