1,3-Dichloro-5-(sulfinylamino)benzene CAS 21250-21-5
| CAS No. | 21250-21-5 |
| Molecular Formula | C6H3Cl2NOS |
| Molecular Weight | 208.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 1,3-Dichloro-5-(sulfinylamino)benzene (CAS 21250-21-5), a certified reference material (molecular formula C6H3Cl2NOS, MW 208.07 g/mol) for analytical method development and quality control.
1,3-Dichloro-5-(sulfinylamino)benzene (C6H3Cl2NOS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C6H3Cl2NOS |
| Molecular Weight | 208.07 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dichloro Standards
- 1,3-Dichloro-2-(sulfinylamino)benzene (CAS 6579-31-3)
- 1,4-Dichloro-2-(sulfinylamino)benzene (CAS 63170-22-9)
- 2,4-Dichloro-1-(sulfinylamino)benzene (CAS 21250-19-1)
- 2,4-Dichloro-6-(vinylthio)-1,3,5-triazine (CAS 667456-87-3)
- (1r)-1-(2,6-Dichloro-3-fluorophenyl)ethan-1-amine (CAS 1212065-90-1)
- (S)-1-(2,6-Dichloro-3-fluorophenyl)ethan-1-amine (CAS 1212219-19-6)
- (R)-1-(2,4-Dichloro-5-fluorophenyl)ethan-1-amine (CAS 1344943-15-2)
- 4,6-Dichloro-N-(methyl-d3)nicotinamide (CAS 1609531-34-1)
Recommended Standards
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- 1-Methyl-5-(4,4,6-trimethyl-1,3,2-dioxaborinan-2-yl)-1H-pyrazole (CAS 2096996-23-3)
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