Clindamycin Impurity 21 CAS CATO-C4X-1341121
| CAS No. | CATO-C4X-1341121 |
| Molecular Formula | C18H34ClN2O9PS |
| Molecular Weight | 520.96 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a sulfone group, a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, Clindamycin Impurity 21 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 520.96 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a process- or degradation-related impurity, Clindamycin Impurity 21 (CAS CATO-C4X-1341121, C18H34ClN2O9PS) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 Impurity 21 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 | C18H34ClN2O9PS |
| Molecular Weight | 520.96 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 | 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 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Clindamycin Standards
- Clindamycin Phosphate N-Oxide (CAS CATO-C4X-1341118)
- Clindamycin 2-Phosphate-(S)-Sulfoxide (CAS 887402-20-2)
- Clindamycin Impurity 169 (CAS 887402-21-3)
- Clindamycin Phosphate Sulfoxide Impurity (CAS 1228573-90-7)
- Clindamycin 2-Phosphate-(R)-Sulfoxide (CAS CATO-C4X-134175)
- Clindamycin Phosphate Peroxide Impurity 89 (CAS CATO-C4X-134189)
- Clindamycin Phosphas EP Impurity L (CAS 620181-05-7)
- Clindamycin Phosphas Impurity 116 (CAS CATO-C4X-1341116)
Recommended Standards
- α-[2-Chloro-1-hydroxy-1-(hydroxymethyl)ethyl]-7-oxo-3-phenyl-4-oxa-2,6-diazabicyclo[3.2.0]hept-2-ene-6-acetic Acid Diphenylmethyl Ester (CAS 68313-69-9)
- GW 5074 (CAS 220904-83-6)
- (E)-3-(3,5-Dibromo-4-hydroxybenzylidene)-5-iodoindolin-2-one (CAS 1044712-42-6)
- Trazodone Impurity 105 (CAS CATO-C4X-1772105)
- Biapenem impurity 16 (CAS CATO-C4X-227316)
- Tigecycline Impurity 30 (CAS CATO-C4X-186030)
- Metoclopramide Impurity 37 (CAS 184151-07-3)
- cis-9,10-Epoxystearic Acid Methyl Ester (CAS 2566-91-8)
- 1-Benzyl-1,6-diazaspiro[3.3]heptane (CAS 1223573-42-9)
- 2-(1H-Benzo[d]imidazol-1-yl)ethan-1-amine (CAS 55661-34-2)
- 1,4-Dibromodibenzo[b,d]furan (CAS 617707-25-2)
- 2',5'-Dimethyl-1,1':4',1''-terphenyl (CAS 20260-22-4)
- 4-(Pyridin-4-yl)-1,3,5-triazin-2-amine (CAS 143261-63-6)
- Acetyl tetrapeptide-3 (CAS 827306-88-7)
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