
Chemical identity
Ascorbic acid EP Impurity-C
CAS 21675-47-8 · C6H10O7
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-06844 |
|---|---|
| PubChem CID | 159793 |
| Name | Ascorbic acid EP Impurity-C |
| CAS RN | 21675-47-8 |
| Molecular formula | C6H10O7 |
| Molecular weight | 194.14 |
| IUPAC name | (3R,4S,5R)-3,4,5,6-tetrahydroxy-2-oxohexanoic acid |
| InChIKey | VBUYCZFBVCCYFD-FLRLBIABSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C6H10O7 |
|---|---|
| InChIKey | VBUYCZFBVCCYFD-FLRLBIABSA-N |
| Ring count | 0 |
| Defined stereocentres | 3 |
| Unassigned stereocentres | 0 |
| SMILES | C([C@H]([C@@H]([C@H](C(=O)C(=O)O)O)O)O)O |
|---|---|
| InChI | InChI=1S/C6H10O7/c7-1-2(8)3(9)4(10)5(11)6(12)13/h2-4,7-10H,1H2,(H,12,13)/t2-,3+,4-/m1/s1 |
03Stereochemistry
The published structure contains 3 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.
Published same-connectivity configurations
3 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.



Ascorbic Acid EP Impurity C
CAS 342385-52-8
VBUYCZFBVCCYFD-NUNKFHFFSA-N
3 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 21675-47-8 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 21675-47-8 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
Ascorbic; Ascorbic Acid
View associated product familyOther names
- D-Sorbosonic Acid
- Provitamin C
- GlyTouCan:G43772VI
- xylo-2-Hexulosonic acid
- rel-(3R,4S,5R)-3,4,5,6-Tetrahydroxy-2-oxohexanoic acid
- 2-Keto-L-idonic acid
- Gulonic acid, 2-oxo-
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 159793
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.
