Clindamycin Impurity 164 CAS 1123211-65-3 (free base)
| CAS No. | 1123211-65-3 (free base) |
| Molecular Formula | C34H63ClN2O7S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Clindamycin Impurity 164 (CAS 1123211-65-3 (free base)) is a certified pharmaceutical impurity reference standard with the molecular formula C34H63ClN2O7SHCl and a molecular weight of 715.85 g/mol.
Structurally, Clindamycin Impurity 164 (C34H63ClN2O7SHCl) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 715.85 g/mol, it falls into the high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures Clindamycin Impurity 164 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 | C34H63ClN2O7S HCl |
| Molecular Weight | 715.85 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) | 3.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Clindamycin Standards
- Clindamycin Impurity 16 (CAS 1123211-66-4)
- Clindamycin Impurity 73 (CAS 1123211-66-4 (free base))
- Clindamycin Pentadecanoate HCl (CAS 1123211-67-5 (free base);)
- Clindamycin Heptadecanoate (CAS 1123211-69-7 (free base))
- Clindamycin Impurity 22 HCI (CAS 1123211-70-0（free base）)
- Clindamycin phosphate ester EP impurity F isomer (CAS 1149764-21-5)
- Clindamycin Phosphate Sulfoxide Impurity (CAS 1228573-90-7)
- Clindamycin Phosphate EP Impurity F (CAS 1228573-93-0)
Recommended Standards
- Valbenazine Impurity 3 (CAS CATO-C4X-33423)
- Valsartan Impurity 34 (CAS 151052-40-3)
- Ramelteon Impurity 40 (CAS 1346598-94-4)
- N-(5-ethynylpyridin-2-yl)acetamide (CAS 351324-98-6)
- 2-(4-Hydrazinylphenyl)acetic acid (CAS 29519-77-5)
- N-(2-Acetyl-6-(trifluoromethyl)pyridin-4-yl)acetamide (CAS 1393554-56-7)
- 1-Bromo-3-methyl-2-butanone (CAS 19967-55-6)
- 1-(2-Fluorobenzyl)piperidine-3-carboxylicacid hydrochloride (CAS 1185299-70-0)
- (3S,4R,5R)-5-(Hydroxymethyl)tetrahydrofuran-2,3,4-triol (CAS 532-20-7)
- Peptide Impurity 26 (CAS 1350456-66-4)
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