Cefmetazole Impurity 55 CAS CATO-C4X-150755
| CAS No. | CATO-C4X-150755 |
| Molecular Formula | C28H27N7O5S3 |
| Molecular Weight | 637.75 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 637.75 g/mol gives Cefmetazole Impurity 55 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Cefmetazole Impurity 55 (CAS CATO-C4X-150755) is a certified pharmaceutical impurity reference standard with the molecular formula C28H27N7O5S3 and a molecular weight of 637.75 g/mol.
Cefmetazole Impurity 55 (C28H27N7O5S3) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Cefmetazole Impurity 55 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 | C28H27N7O5S3 |
| Molecular Weight | 637.75 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 |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 7 |
| Sulfur Atoms | 3 |
Related Cefmetazole Standards
- Cefmetazole sodium Impurity 18 (CAS 56796-19-1)
- Cefmetazole Impurity 24 (CAS CATO-C4X-150724)
- Cefmetazole Impurity 32 (CAS CATO-C4X-150732)
- Cefmetazole Impurity 73 (CAS CATO-C4X-150773)
- Cefmetazole Impurity 43 (CAS CATO-C4X-150743)
- Cefmetazole Impurity 15 (CAS CATO-C4X-150715)
- Cefmetazole Impurity 56 (CAS CATO-C4X-150756)
- Cefmetazole Impurity 42 (CAS CATO-C4X-150742)
Recommended Standards
- Trityl-PEG8-azide (CAS 1818294-30-2)
- 5-Acetamido-2,4,6-triiodoisophthaloyl Dichloride (CAS 31122-75-5)
- 29-Azido-3,6,9,12,15,18,21,24,27-nonaoxanonacosyl 4-methylbenzenesulfonate (CAS 1418561-45-1)
- Difelikefalin Impurity 50 (CAS CATO-C4X-304150)
- Pemafibrate Impurity 91 (CAS CATO-C4X-290391)
- Efinaconazole Impurity 3 (CAS 135272-36-5)
- Relugolix Impurity 60 (CAS CATO-C4X-242960)
- 5-Methyl-5-((S)-4-methyl-5-oxocyclohex-3-en-1-yl)-4,5-dihydroisoxazole-3-carboxylic acid (CAS 1013759-72-2)
- 4-(Hydroxymethyl)cyclopenta[c]pyran-7-carbaldehyde (CAS 71013-42-8)
- Acetophenone-α-<SUP>13</SUP>C (CAS 10383-88-7)
- 2-(1,3-Thiazol-4-ylmethoxy)benzoic acid (CAS 863763-93-3)
- Azamethiphos (CAS 4380-43-2)
- (4r)-2-(3,5-Dimethoxyphenyl)thiazolidine-4-carboxylic acid (CAS 1014081-80-1)
- Semaglutide impurity 24 (CAS CATO-C4X-222624)
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