Empagliflozin Impurity 293 CAS 1185339-44-9
| CAS No. | 1185339-44-9 |
| Molecular Formula | C19H21ClO5 |
| Molecular Weight | 364.82 g/mol |
| 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.
Empagliflozin Impurity 293 (CAS 1185339-44-9) is a certified pharmaceutical impurity reference standard with the molecular formula C19H21ClO5 and a molecular weight of 364.82 g/mol.
Structurally, Empagliflozin Impurity 293 (C19H21ClO5) contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 364.82 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C19H21ClO5 |
| Molecular Weight | 364.82 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
Related Empagliflozin Standards
- Empagliflozin impurity 274 (CAS 2744280-73-5)
- Empagliflozin Impurity 105 (CAS 915095-90-8)
- Empagliflozin Impurity 167 (CAS CATO-C4X-1065167)
- Empagliflozin impurity 177 (CAS CATO-C4X-1065177)
- Empagliflozin impurity 178 (CAS CATO-C4X-1065178)
- Empagliflozin Impurity 25 (CAS 915095-89-5)
- Empagliflozin Impurity 66 (CAS 2744280-76-8)
- Empagliflozin Impurity 145 (CAS CATO-C4X-1065145)
Recommended Standards
- Baclofen Impurity 5 (CAS 1053068-98-6)
- (S)-6-Amino-1-(4-chlorophenyl)-3-methyl-4-phenyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (CAS 1793093-50-1)
- N'-Benzylidene-4-((4-chlorobenzyl)oxy)benzohydrazide (CAS 443979-14-4)
- 2'-(4-Chlorophenyl)-5,5'-dimethyl-2-phenyl-1',2'-dihydro-2H,3'H-[3,4'-bipyrazol]-3'-one (CAS 245039-32-1)
- Edoxaban impurity 133 (CAS CATO-C4X-1063133)
- Ethacridine Lactate Impurity 23 (CAS CATO-C4X-260923)
- Sarecycline impurity 9 (CAS CATO-C4X-27989)
- 3-Amino-N-cyclopropylcyclohexane-1-carboxamide (CAS 1016703-89-1)
- Oroxin B (CAS 114482-86-9)
- (3S,4R)-1-Hydroxy-3-methyl-4-pivaloylpyrrolidine-2,5-dione (CAS 214679-34-2)
- N,N-Diethylcyclopent-1-en-1-amine (CAS 34969-48-7)
- 1-(4-Methylcyclohexyl)cyclopentane-1-carboxylic acid (CAS 1536770-50-9)
- 2-Chloro-10-phenylacridin-9(10H)-one (CAS 6321-64-8)
- Tirzepatide Impurity 22 X TFA Salt (CAS CATO-C4X-324022)
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