Ampicillin EP Impurity G CAS 31485-02-6
| CAS No. | 31485-02-6 |
| Molecular Formula | C16H14N2O2 |
| Molecular Weight | 266.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Ampicillin EP Impurity G (CAS 31485-02-6) is a certified pharmaceutical impurity reference standard with the molecular formula C16H14N2O2 and a molecular weight of 266.29 g/mol.
Structurally, Ampicillin EP Impurity G (C16H14N2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 266.29 g/mol, it falls into the medium-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.
CATO manufactures Ampicillin EP Impurity G under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H14N2O2 |
| Molecular Weight | 266.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >90% |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 2 |
Related Ampicillin Standards
- Ampicillin Impurity Ⅱ (CAS 26280-46-6)
- Ampicillin Impurity 101 (CAS CATO-C4X-1443101)
- Ampicillin Impurity 96 (CAS 35039-72-6)
- Ampicillin Impurity 85 (CAS CATO-C4X-144385)
- Ampicillin Impurity 74 (CAS CATO-C4X-144374)
- Ampicillin Impurity 80 (CAS CATO-C4X-144380)
- Ampicillin Impurity 45 (CAS 336870-02-1)
- Ampicillin Impurity 52 (CAS CATO-C4X-144352)
Recommended Standards
- Loxoprofen Impurity 149 (CAS CATO-C4X-1488149)
- Metoprolol impurity 45 (CAS CATO-C4X-136745)
- Lacosamide Impurity 32 (CAS CATO-C4X-183032)
- Metoprolol Impurity 44 (CAS CATO-C4X-136744)
- Posaconazole Impurity 132 (CAS CATO-C4X-1208132)
- Sitafloxacin impurity 59 (CAS 1542764-78-2)
- Levofloxacin impurity 91 (CAS 151250-74-7)
- 4-(4-Aminophenoxy)butanoic acid (CAS 851757-04-5)
- (5-(1,3-Dioxolan-2-yl)thiophen-2-yl)(2,4-difluorophenyl)methanone (CAS 898778-76-2)
- 3-(Aminomethyl)-5-nitroaniline (CAS 1261669-00-4)
- 5-Bromo-1-cyclopentyl-6-fluoro-2-methylbenzimidazole (CAS 1393442-64-2)
- Decahydro-2-methyl-3,5,1,7-[1,2,3,4]butanetetraylnaphthalen-2-ol (CAS 30545-26-7)
- 2,6-Dichloro-N-methylpyrimidin-4-amine (CAS 32998-03-1)
- Des-Pro31-Tirzepatide (CAS CATO-CPTD788943)
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