Cefprozil Monohydrate CAS 121123-17-9
| CAS No. | 121123-17-9 |
| Molecular Formula | C18H19N3O5S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Cefprozil Monohydrate.
Cefprozil Monohydrate (CAS 121123-17-9) is a high-purity analytical reference standard with the molecular formula C18H19N3O5SH2O and a molecular weight of 407.44 g/mol.
The molecular framework of Cefprozil Monohydrate (C18H19N3O5SH2O) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C18H19N3O5S H2O |
| Molecular Weight | 407.44 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefprozil Standards
- Cefprozil Δ3 Isomer (CAS 1000980-59-5)
- Cefprozil EP Impurity D (CAS 106447-44-3)
- Cefprozil EP Impurity F (CAS 107937-01-9)
- Cefprozil (2S)-Isomer (CAS 110764-35-7)
- Cefprozil (E)-Isomer monohydrate (CAS 111900-24-4)
- Cefprozil (Z)-Isomer monohydrate (CAS 114876-72-1)
- Cefprozil Impurity 46 (CAS 120709-09-3)
- Cefprozil Impurity N1(Z-Cefprozil) (CAS 121412-77-9)
Recommended Standards
- (11AS,11a'S)-8,8'-(propane-1,3-diylbis(oxy))bis(7-methoxy-2-methylene-1,2,3,11a-tetrahydro-5H-benzo[e]pyrrolo[1,2-a][1,4]diazepin-5-one) (CAS 232931-57-6)
- 6-(2-Hydroxy-ethyl)-3-methyl-5-oxo-5,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidine-7-carboxylic acid (CAS 879058-32-9)
- Sodium 3-(m-tolyl)propanoate (CAS 1260665-32-4)
- Nebramine (CAS 34051-04-2)
- 2-[(4-carbamoylpyridin-2-yl)amino]acetic acid (CAS 1016868-74-8)
- 3,5-Diiodo-4-methylpyridine (CAS 98139-01-6)
- 1-Methyl-3-pyrroleboronic Acid Pinacol Ester (CAS 953040-54-5)
- Cinitapride Impurity 26 (CAS CATO-C4X-290826)
- 2-Oxaspiro[4.4]Nonane-6-carboxylic acid (CAS 2386363-75-1)
- Semaglutide impurity 76 (CAS CATO-C4X-222676)
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