Cefdinir Impurity 77 CAS 101156-40-5
| CAS No. | 101156-40-5 |
| Molecular Formula | C24H23IN2O5S |
| Molecular Weight | 578.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| 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 Cefdinir Impurity 77.
Cefdinir Impurity 77 (CAS 101156-40-5) is a certified pharmaceutical impurity reference standard with the molecular formula C24H23IN2O5S and a molecular weight of 578.42 g/mol.
Based on its molecular formula C24H23IN2O5S, Cefdinir Impurity 77 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 578.42 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.
As a certified reference material (CRM), Cefdinir Impurity 77 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C24H23IN2O5S |
| Molecular Weight | 578.42 g/mol |
| Purity | ≥90% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Cefdinir Standards
- Cefdinir Impurity 84 (CAS CATO-C4X-121084)
- Cefdinir Impurity 67 (CAS CATO-C4X-121067)
- Cefdinir Impurity 68 (CAS CATO-C4X-121068)
- Cefdinir Impurity 69 (CAS CATO-C4X-121069)
- Cefdinir Impurity 88 (CAS CATO-C4X-121088)
- Cefdinir Impurity 35 (CAS CATO-C4X-121035)
- Cefdinir Impurity 70 (CAS CATO-C4X-121070)
- Cefdinir Impurity 91 (CAS 206855-74-5)
Recommended Standards
- 2,2-Bis[4-(4-nitrophenoxy)phenyl]hexafluoropropane (CAS 69563-87-7)
- Xanthofulvin (CAS 151466-15-8)
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- N-(4,6-Bis(phenylthio)-1,3,5-triazin-2-yl)-4-iodobenzenesulfonamide (CAS 62752-12-9)
- Avatrombopag Impurity 116 (CAS CATO-C4X-2234116)
- Cyclophosphamide impurity 40 (CAS CATO-C4X-230640)
- Risedronate impurity 11 (CAS CATO-C4X-175011)
- 3-(6-Methoxy-pyrimidin-4-ylamino)-piperidine-1-carboxylic acid tert-butyl ester (CAS 1353955-36-8)
- 2-(1-(Tert-butoxycarbonyl)piperidin-3-yl)-2,2-difluoroacetic acid (CAS 1782406-03-4)
- 2-[(2,4-Difluorophenyl)formamido]-3-phenylpropyl 2,4-difluorobenzoate (CAS 338777-59-6)
- 2-(4-Allyl-5-((4-fluorobenzyl)thio)-4H-1,2,4-triazol-3-yl)pyridine (CAS 618880-05-0)
- α-Pyrone (CAS 504-31-4)
- trans-3-(3,4-Dimethoxyphenoxy)cyclobutanamine (CAS 1631027-11-6)
- 149471-11-4 Neuropeptide DF2 L-Phenylalaninamide, L-alpha-aspartyl-L-arginyl-L-asparaginyl-L-phenylalanyl-L-leucyl-L-arginyl- Asp-arg-asn-phe-leu-arg-phe-NH2 Aspartyl-arginyl-asparaginyl-phenylalanyl-leucyl-arginyl-phenylalaninamide L-alpha-Aspartyl-L-arginyl-L-asparaginyl-L-phenylalanyl-L-leucyl-L-arginyl-L-phenylalaninamide DF(2) Neuropeptide Drnflrfamide (CAS 149471-11-4)
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