Oxacillin Impurity 20 HCI CAS CATO-C4X-232120
| CAS No. | CATO-C4X-232120 |
| Molecular Formula | C18H21N3O4S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Oxacillin Impurity 20 HCI under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies Oxacillin Impurity 20 HCI (CAS CATO-C4X-232120), a pharmacopoeial impurity reference standard (molecular formula C18H21N3O4SHCl, MW 411.90 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C18H21N3O4SHCl, Oxacillin Impurity 20 HCI contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 411.90 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C18H21N3O4S HCl |
| Molecular Weight | 411.90 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Oxacillin Standards
- Oxacillin Monohydrate EP Impurity C (CAS 1136-45-4)
- Oxacillin Sodium Salt (CAS 1173-88-2)
- Oxacillin D5 Sodium (CAS 1173-88-2 (unlabelled))
- Oxacillin EP Impurity D (CAS 1642559-63-4)
- Oxacillin Impurity N1 (CAS 37699-31-3)
- Oxacillin Monohydrate EP Impurity F (CAS 5053-35-0)
- Oxacillin Impurity 33 (CAS 5053-35-0（free base）)
- Oxacillin Sodium Monohydrate (CAS 7240-38-2)
Recommended Standards
- Baloxavir Impurity 125 (CAS CATO-C4X-2108125)
- Lifitegrast Impurity 42 (CAS 588703-29-1)
- Trelagliptin Impurity 79 (CAS CATO-C4X-104679)
- 1-[(3-Phenylpropyl)sulfonyl]piperidine-4-carboxylic acid (CAS 1858255-04-5)
- (2R,4R)-1-tert-Butyl 2-methyl 4-fluoropyrrolidine-1,2-dicarboxylate (CAS 647857-43-0)
- 3-Hydroxy-5,6,7,8-tetrahydroisoquinoline-4-carboxylic acid (CAS 102236-82-8)
- 2-(4-(Difluoromethoxy)phenyl)piperidine (CAS 1152583-20-4)
- Methyl 5-hydroxythiophene-2-carboxylate (CAS 107433-27-2)
- 1,2-Diiodobenzene (CAS 615-42-9)
- Semaglutide impurity 198 (CAS CATO-C4X-2226198)
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