Ampicillin EP Impurity H CAS 73200-73-4
| CAS No. | 73200-73-4 |
| Molecular Formula | C10H8N2O |
| Molecular Weight | 172.18 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Ampicillin EP Impurity H (CAS 73200-73-4), a pharmacopoeial impurity reference standard (molecular formula C10H8N2O, MW 172.18 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Ampicillin EP Impurity H (C10H8N2O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C10H8N2O |
| Molecular Weight | 172.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
Related Ampicillin Standards
- Ampicillin Impurity 102 (CAS CATO-C4X-1443102)
- Ampicillin EP Impurity K (CAS 40610-41-1)
- Ampicillin Impurity 52 (CAS CATO-C4X-144352)
- Ampicillin Impurity 80 (CAS CATO-C4X-144380)
- Ampicillin Impurity 85 (CAS CATO-C4X-144385)
- Ampicillin Impurity Ⅱ (CAS 26280-46-6)
- Ampicillin Impurity 101 (CAS CATO-C4X-1443101)
- Ampicillin EP Impurity G (CAS 31485-02-6)
Recommended Standards
- Mivacurium chloride Impurity 23 (CAS 48059-97-8)
- Clemastine Impurity 25 (CAS 57520-19-1)
- Pregabalin Impurity 80 (CAS 4441-78-5)
- Bimatoprost Impurity 8 (CAS 76704-05-7)
- Triclabendazole EP Impurity A (CAS 100648-13-3)
- Dotinurad Impurity 84 (CAS CATO-C4X-249484)
- Diazoxide Impurity 20 (CAS CATO-C4X-195220)
- 1-(7-Amino-5-phenyl-[1,2,5]oxadiazolo[3,4-b]pyridin-6-yl)ethan-1-one (CAS 339589-58-1)
- DODECA-2(E)-DIENOIC ACID ISOBUTYLAMIDE (CAS 24738-51-0)
- Octahydro-2H-1,4-benzoxazine hydrobromide (CAS 74572-19-3)
- N-(4-Bromophenyl)-1-(2,4-dichloro-5-methoxyphenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 339015-11-1)
- Tert-butyl 2-(hydroxymethyl)-4-methylpyrrolidine-1-carboxylate (CAS 1615221-98-1)
- 2-Bromo-5,6-dihydro-4H-cyclopenta[b]furan-4-one (CAS 1368352-72-0)
- Semaglutide impurity 289 (CAS CATO-C4X-2226289)
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