Dapsone Impurity 25 CAS 32631-31-5
| CAS No. | 32631-31-5 |
| Molecular Formula | C12H10ClNO2S |
| Molecular Weight | 267.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Dapsone Impurity 25 (CAS 32631-31-5) is a high-purity analytical reference standard with the molecular formula C12H10ClNO2S and a molecular weight of 267.73 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, Dapsone Impurity 25 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 267.73 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C12H10ClNO2S |
| Molecular Weight | 267.73 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dapsone Standards
- Dapsone Impurity 16 (CAS 148301-96-6)
- Dapsone EP Impurity E (CAS 7146-68-1)
- Dapsone Impurity 22 (CAS 64896-96-4)
- Dapsone Hydroxylamine Deuterated (CAS 198486-78-1)
- Dapsone Hydroxylamine-d4 (CAS 1330185-26-6)
- Dapsone Hydroxylamine (CAS 32695-27-5)
- Dapsone Impurity 9 (CAS 5461-23-4)
- Dapsone Impurity 2 (CAS CATO-C4X-16042)
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- 4,6-Dimethylpyrimidin-2-ol sulfate (CAS 87773-22-6)
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Why CATO?
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