Clindamycin Phosphas EP Impurity C CAS 28708-34-1
| CAS No. | 28708-34-1 |
| Molecular Formula | C18H34ClN2O8PS |
| Molecular Weight | 504.96 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Clindamycin Phosphas EP Impurity C (CAS 28708-34-1, C18H34ClN2O8PS) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Clindamycin Phosphas EP Impurity C (C18H34ClN2O8PS) contains an amide group, a sulfone group, a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.5, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 504.96 g/mol, it falls into the moderately-high-molecular-weight range. 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.
CATO manufactures Clindamycin Phosphas EP Impurity C 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.
Physical & Chemical Properties
| Molecular Formula | C18H34ClN2O8PS |
| Molecular Weight | 504.96 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 | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.5 |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Clindamycin Standards
- Clindamycin Phosphas EP Impurity L (CAS 620181-05-7)
- Clindamycin Phosphas Impurity 116 (CAS CATO-C4X-1341116)
- Clindamycin Impurity 122 (CAS 1803042-32-1)
- Clindamycin Impurity 160 (CAS CATO-C4X-1341160)
- Clindamycin Impurity 163 (CAS CATO-C4X-1341163)
- Clindamycin Phosphas EP Impurity D (CAS 54887-30-8)
- Clindamycin (2R-cis)-Diastereomer 2-Phosphate (CAS 1800297-62-4)
- Clindamycin Phosphas Impurity 46 (CAS CATO-C4X-134146)
Recommended Standards
- Clindamycin Phosphate (CAS 24729-96-2)
- N-(2-((5-Chloro-2-((2-methoxy-4-morpholinophenyl)amino)pyrimidin-4-yl)amino)phenyl)methanesulfonamide (CAS 1191911-27-9)
- Methyl 1-benzyl-5-(4-chlorophenyl)-3-(4-methoxyphenyl)-4,6-dioxooctahydropyrrolo[3,4-c]pyrrole-1-carboxylate (CAS 318239-70-2)
- 1-(4-Chlorophenyl)-N-(3-cyano-4-(4-morpholinopiperidin-1-yl)phenyl)-5-methyl-1H-pyrazole-4-carboxamide (CAS 288250-47-5)
- Azilsartan Impurity 124 (CAS CATO-C4X-1096124)
- Regorafenib EP Impurity B (CAS 2141961-84-2)
- Aripiprazole impurity 80 (CAS CATO-C4X-100880)
- 5-[(4-amino-1-methyl-butyl)amino]-2-(2,6-dioxo-3-piperidyl)isoindoline-1,3-dione (CAS 2703768-35-6)
- 1-Benzyl-2-vinylpyrrolidine (CAS 64871-53-0)
- 3-chloro-4-cyclopropyl-5-phenyl-4H-1,2,4-triazole (CAS 1020035-36-2)
- 1-(4-Hydroxybenzo[d]oxazol-2-yl)ethanone (CAS 1803858-21-0)
- Pyrroside B (CAS 116271-35-3)
- 3-[(2-(Benzyloxycarbonyl)aminoacetyl)amino]-2,4,6-triiodoisophthalic Acid (CAS 1796931-77-5)
- Semaglutide Impurity 21(HO-Ste-L-γGlu-AEEA-AEEA-OH) (CAS 1335440-44-2)
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