Clindamycin Impurity 16 CAS 1123211-66-4
| CAS No. | 1123211-66-4 |
| Molecular Formula | C32H59ClN2O6S |
| Molecular Weight | 635.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Clindamycin Impurity 16 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.
Clindamycin Impurity 16 (CAS 1123211-66-4) is a certified pharmaceutical impurity reference standard with the molecular formula C32H59ClN2O6S and a molecular weight of 635.34 g/mol.
The molecular framework of Clindamycin Impurity 16 (C32H59ClN2O6S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C32H59ClN2O6S |
| Molecular Weight | 635.34 g/mol |
| Purity | 97%+ |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Clindamycin Standards
- Clindamycin Phosphas Impurity 41 (CAS CATO-C4X-134141)
- Clindamycin Impurity 140 (CAS CATO-C4X-1341140)
- Clindamycin Impurity 15 (CAS CATO-C4X-134115)
- Clindamycin B Palmitate (CAS CATO-C1798828)
- Clindamycin Palmitate Impurity 106 (CAS CATO-C4X-1341106)
- Clindamycin 4-Palmitate (CAS CATO-C4X-1341126)
- Clindamycin Impurity 17 (CAS CATO-C4X-134117)
- Clindamycin Impurity 168 (CAS CATO-C4X-1341168)
Recommended Standards
- 5-(2-Chloroacetamido)-2,4,6-triiodo-isophthalic Acid (CAS 4873-45-4)
- 1,3-Dilinoleoyl-2-chloropropanediol (CAS 1432592-04-5)
- Isoeicosanol (CAS 52655-10-4)
- rac-1,2-Dilinoleoyl-3-chloropropanediol (CAS 74875-96-0)
- Lusutrombopag Impurity 77 (CAS CATO-C4X-208477)
- Lacosamide Impurity 23 (CAS 1695551-74-6)
- Rifaximin Impurity B (CAS 1351775-03-5)
- 1-Chloro-4-(2-isocyanoethyl)benzene (CAS 602262-89-5)
- 5-Methoxyisoquinolin-1(2H)-one (CAS 118313-35-2)
- 3-bromo-5-fluoro-1H-indazole (CAS 885519-08-4)
- 2-Bromo-N-(3-sulfamoylphenyl)acetamide (CAS 886008-97-5)
- 2,5-Dioxopyrrolidin-1-yl (2,2,2-trichloroethyl) carbonate (CAS 66065-85-8)
- Oxybutynin EP Impurity C (CAS 1199574-70-3)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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