Ampicillin CAS 69-53-4
| CAS No. | 69-53-4 |
| Molecular Formula | C16H19N3O4S |
| Molecular Weight | 349.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ampicillin (CAS 69-53-4) is a high-purity analytical reference standard with the molecular formula C16H19N3O4S and a molecular weight of 349.40 g/mol.
Structurally, Ampicillin (C16H19N3O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 349.40 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C16H19N3O4S |
| Molecular Weight | 349.40 g/mol |
| Purity | >80% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ampicillin Standards
- Ampicillin Impurity 100 (CAS CATO-C4X-1443100)
- Ampicillin EP Impurity C(Isomeric mixture 2) (CAS CATO-C4X-144318)
- Ampicillin EP Impurity B (CAS 19379-33-0)
- Ampicillin EP Impurity C(Isomeric mixture1) (CAS CATO-C4X-14433)
- Ampicillin Trihydrate EP Impurity N (CAS CATO-C4X-144353)
- Ampicillin Impurity 98 (CAS 49841-96-5)
- Ampicillin Impurity 46 (CAS CATO-C4X-144346)
- Ampicillin impurity 65 (CAS 55675-51-9)
Recommended Standards
- Cefradine (CAS 38821-53-3)
- 1-(4-Methoxyphenyl)-4-(4-phenylthiazol-2-yl)-1H-1,2,3-triazol-5-amine (CAS 1032229-82-5)
- Bumetanide Impurity 89 (CAS 688047-81-6)
- (5E)-2-Mercapto-5-[(5-methoxy-1H-indol-3-yl)-methylene]-3-phenyl-3,5-dihydro-4H-imidazol-4-one (CAS 1142201-48-6)
- 4-chloro-N-nitrosopiperidine (CAS 65445-61-6)
- MK8722 (CAS 1394371-71-1)
- 2-cyanoethanimidamide hydrochloride (CAS 1803591-44-7)
- Arotinolol Impurity 35 (CAS CATO-C4X-185435)
- 1,4-Diamino-6-chloro-2-phenoxyanthracene-9,10-dione (CAS 88623-57-8)
- 3'-(Methylsulfonyl)-[1,1'-biphenyl]-4-ol (CAS 1094217-63-6)
- 1-Butoxy-6-chlorohexane (CAS 1002-76-2)
- Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 6'-[ethyl(4-methylphenyl)amino]-2'-methyl- (CAS 42228-32-0)
- (7-bromo-3-fluoro-benzofuran-5-yl)methanol (CAS 2306277-98-3)
- (Des-Gly2)-Exenatide trifluoroacetate salt (CAS 1678416-78-8)
Why CATO?
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