Cloxacillin Impurity 27 CAS CATO-C4X-159727
| CAS No. | CATO-C4X-159727 |
| Molecular Formula | C11H8ClNO3 |
| Molecular Weight | 237.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Cloxacillin Impurity 27 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Cloxacillin Impurity 27 (CAS CATO-C4X-159727) is a certified pharmaceutical impurity reference standard with the molecular formula C11H8ClNO3 and a molecular weight of 237.64 g/mol.
Based on its molecular formula C11H8ClNO3, Cloxacillin Impurity 27 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 237.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), Cloxacillin Impurity 27 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 | C11H8ClNO3 |
| Molecular Weight | 237.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Cloxacillin Standards
- Cloxacillin EP Impurity D (CAS 23598-72-3)
- Cloxacillin Impurity 23 (CAS CATO-C4X-159723)
- Cloxacillin Impurity 26 (CAS CATO-C4X-159726)
- Cloxacillin Impurity 16 (CAS 1143-82-4)
- Cloxacillin Impurity N1 (CAS 4357-94-2)
- Cloxacillin Impurity 15 (CAS 1598387-74-6)
- Cloxacillin Impurity 17 (CAS 91059-01-7)
- Cloxacillin Impurity 18 (CAS 25629-50-9)
Recommended Standards
- Alanyl Glutamine Impurity 23 (CAS CATO-C4X-197423)
- Drazoxolon (CAS 5707-69-7)
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- Cloquintocet (Free Acid) (CAS 88349-88-6)
- Cefadroxil Impurity 43 (CAS CATO-C4X-122443)
- Terbutaline Impurity 52 (CAS CATO-C4X-118352)
- Docetaxel Impurity 75 (CAS CATO-C4X-161975)
- (3,4-Dimethoxy-phenyl)-(1-furan-2-yl-but-3-enyl)-amine (CAS 340025-60-7)
- Asenapine Impurity 21 (CAS 1000890-02-7)
- 1-(Dichloromethyl)-4-(trifluoromethyl)benzene (CAS 82510-98-3)
- (2S)-1-(morpholin-4-yl)propan-2-ol (CAS 65617-17-6)
- 3-Acetyl-5-bromo-8-hydroxy-3,4-dihydronaphthalen-1(2H)-one (CAS 83344-22-3)
- N'-(1-(2-Chlorophenyl)ethylidene)-2-(1-methyl-1H-pyrrol-2-yl)acetohydrazide (CAS 315226-12-1)
- D-[Ser]8-Semaglutide (CAS CATO-C4X-2226207)
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