Calcium Dobesilate Impurity N1 CAS 6409-58-1
| CAS No. | 6409-58-1 |
| Molecular Formula | C6H6O5S |
| Molecular Weight | 190.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Calcium Dobesilate Impurity N1 (CAS 6409-58-1), a pharmacopoeial impurity reference standard (molecular formula C6H6O5S, MW 190.17 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Calcium Dobesilate Impurity N1 (C6H6O5S) contains a carbohydrate-derived structure, a sulfone group. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 190.17 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C6H6O5S |
| Molecular Weight | 190.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |
Related Calcium Standards
- Calcium Dobesilate Impurity N2 (CAS 35857-70-6)
- Calcium Dobesilate Impurity N5 (CAS 7134-09-0)
- Calcium Dobesilate Impurity 19 (CAS 17724-07-1)
- Calcium Dobesilate Impurity 3 (CAS CATO-C4X-20513)
- Calcium Dobesilate Impurity 2 (CAS CATO-C4X-20512)
- Calcium Dobesilate Impurity 23 (CAS CATO-C4X-205123)
- Calcium Dobesilate Impurity 4 (CAS 2429952-20-3)
- Calcium Dobesilate Impurity 26 (CAS CATO-C4X-205126)
Recommended Standards
- N1-Methyl-4-(trifluoromethyl)benzene-1,2-diamine (CAS 35203-49-7)
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- Bis(2-Fluoroethyl) Sulfate (CAS 381-46-4)
- n-Ethyl-5-(trifluoromethyl)pyridin-2(1h)-imine (CAS 89810-00-4)
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- (R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(4-isopropylbenzyl)propanoic acid (CAS 1260601-77-1)
- Pramipexole Impurity 10 (CAS CATO-C4X-110710)
- 4-(2-methoxypropan-2-yl)benzoic acid (CAS 50604-11-0)
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- 3H-[1,2,3]triazolo[4,5-b]pyridine-6-carboxylic acid (CAS 1260385-82-7)
- Liraglutide Sodium Salt (CAS 204656-20-2（free base）)
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