Ampicillin Impurity 68 CAS CATO-C4X-144368
| CAS No. | CATO-C4X-144368 |
| Molecular Formula | C15H19N3O4S |
| Molecular Weight | 337.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ampicillin Impurity 68 (CAS CATO-C4X-144368), a pharmacopoeial impurity reference standard (molecular formula C15H19N3O4S, MW 337.39 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C15H19N3O4S, Ampicillin Impurity 68 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 337.39 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C15H19N3O4S |
| Molecular Weight | 337.39 g/mol |
| Purity | 97%+ |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ampicillin Standards
- Ampicillin impurity 65 (CAS 55675-51-9)
- Ampicillin Impurity 77 (CAS CATO-C4X-144377)
- Ampicillin Impurity 46 (CAS CATO-C4X-144346)
- 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)
Recommended Standards
- 4-(1-cyclohexyl-4-(4-fluorophenyl)-1H-imidazol-5-yl)-2-pyrimidinamine 4-[1-cyclohexyl-4-(4-fluorophenyl)-1H-imidazol-5-yl]pyrimidin-2-amine 950980-98-0 CHEBI:87283 PF-670462 free base free base of PF-670462 (CAS 950980-98-0)
- Pimobendan Impurity 15-d3 (CAS CATO-C4X-246116)
- 2611AF 899703-63-0 C15H19N3O4S {(3,5-Dimethylphenyl)[(3,5-dimethyl-1H-pyrazol-4-yl)sulfonyl]amino}acetic acid (CAS 899703-63-0)
- Pimobendan Impurity 14-d3 (CAS CATO-C4X-246117)
- Norepinephrine impurity 144 (CAS CATO-C4X-1514144)
- Pimavanserin impurity 62 (CAS CATO-C4X-193862)
- Selexipag Impurity 13 (CAS 41270-66-0)
- Deuterated Dimethoxy Formamide(N-2) (CAS 1351951-84-2)
- (11bS)-4-Hydroxy-2,6-bis(triphenylsilyl)dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepine 4-oxide 929097-92-7 (CAS 929097-92-7)
- 6-Bromo-N-ethylpyridin-2-amine (CAS 724770-74-5)
- (R)-2-(Ethyl(1-methylpyrrolidin-3-yl)amino)acetic acid (CAS 1354000-79-5)
- 1-(3-Cyano-5-fluorophenyl)cyclopropane-1-carboxylic acid (CAS 1314761-92-6)
- 3-Nitroisonicotinoyl chloride (CAS 59290-83-4)
- Liraglutide Impurity 15 TFA Salt (CAS CATO-C4X-199215)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com