
Chemical identity
Ampicillin EP Impurity M
CAS 62326-82-3 · C32H38N6O8S2
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-06265 |
|---|---|
| PubChem CID | 76965579 |
| Name | Ampicillin EP Impurity M |
| CAS RN | 62326-82-3 |
| Molecular formula | C32H38N6O8S2 |
| Molecular weight | 698.8 g/mol |
| IUPAC name | (1S,4S,7R)-7-((2R)-2-(2-((R)-2-amino-2-phenylacetamido)-2-((4S)-4-carboxy-5,5-dimethyltetrahydrothiophen-2-yl)acetamido)-2-phenylacetamido)-3,3-dimethyl-6-oxo-2-thiabicyclo[3.2.0]heptane-4-carboxylic acid |
| InChIKey | AZTDOCKXPFRLQQ-BOUYBQKTSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C32H38N6O8S2 |
|---|---|
| InChIKey | AZTDOCKXPFRLQQ-BOUYBQKTSA-N |
| Ring count | 5 |
| Defined stereocentres | 8 |
| Unassigned stereocentres | 0 |
| SMILES | CC1([C@@H](N[C@H](S1)[C@@H](C(=O)N[C@H](C2=CC=CC=C2)C(=O)N[C@H]3[C@@H]4N(C3=O)[C@H](C(S4)(C)C)C(=O)O)NC(=O)[C@@H](C5=CC=CC=C5)N)C(=O)O)C |
|---|---|
| InChI | InChI=1S/C32H38N6O8S2/c1-31(2)21(29(43)44)37-26(47-31)19(35-23(39)17(33)15-11-7-5-8-12-15)25(41)34-18(16-13-9-6-10-14-16)24(40)36-20-27(42)38-22(30(45)46)32(3,4)48-28(20)38/h5-14,17-22,26,28,37H,33H2,1-4H3,(H,34,41)(H,35,39)(H,36,40)(H,43,44)(H,45,46)/t17-,18-,19-,20-,21+,22+,26-,28-/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
2 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.


Ampicillin Oligomer 1 (Dimer)
CAS Not listed
AZTDOCKXPFRLQQ-NDJSOHCDSA-N
6 defined, 2 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.
04Possible N-nitroso structures
A record-level structural review indicates a possible N-nitroso candidate. This is not a confirmed impurity, formation prediction or analytical finding.
A structural result alone does not establish that a nitrosamine forms. A process-specific and analytical assessment is required.
05India 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 62326-82-3 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 62326-82-3 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
06Names and relationships
Associated parent compound
Ampicillin
View API and impurity familyOther names
- Glycinamide, (2R)-2-phenylglycyl-(2R)-2-[(2R,4S)-4-carboxy-5,5-dimethyl-2-thiazolidinyl]glycyl-N-[(2S,5R,6R)-2-carboxy-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-6-yl]-2-phenyl-, (2R)-
- (2S,5R,6R)-6-[[(2R)-2-[[(2R)-2-[[(2R)-2-amino-2-phenylacetyl]amino]-2-[(2R,4S)-4-carboxy-5,5-dimethyl-1,3-thiazolidin-2-yl]acetyl]amino]-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid
- Ampicillin dimer
- (2R)-(2R)-2-Phenylglycyl-(2R)-2-[(2R,4S)-4-carboxy-5,5-dimethyl-2-thiazolidinyl]glycyl-N-[(2S,5R,6R)-2-carboxy-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-6-yl]-2-phenylglycinamide
- (2S,5R,6R)-6-((R)-2-((R)-2-((R)-2-amino-2-phenylacetamido)-2-((2R,4S)-4-carboxy-5,5-dimethylthiazolidin-2-yl)acetamido)-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid
07Documented 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.
08Sources
- S01PubChem compound record, CID 76965579
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.
