5,7-Dichlorobenzo[d]thiazol-2(3H)-one CAS 898747-80-3
| CAS No. | 898747-80-3 |
| Molecular Formula | C7H3Cl2NOS |
| Molecular Weight | 220.08 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.
5,7-Dichlorobenzo[d]thiazol-2(3H)-one (CAS 898747-80-3), molecular formula C7H3Cl2NOS and molecular weight 220.08 g/mol, is a CATO reference standard with documented purity and traceability.
5,7-Dichlorobenzo[d]thiazol-2(3H)-one (C7H3Cl2NOS) 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 5,7-Dichlorobenzo[d]thiazol-2(3H)-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H3Cl2NOS |
| Molecular Weight | 220.08 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dichlorobenzo Standards
- 5,7-Dichlorobenzo[c][1,2,5]thiadiazol-4-amine (CAS 16407-86-6)
- 4,5-Dichlorobenzo[d]thiazol-2(3H)-one, 97% (CAS 87553-87-5)
- 4,6-Dichlorobenzo[d]oxazole-2-thiol (CAS 218930-35-9)
- 4,6-Dichlorobenzo[d]thiazol-2(3H)-one (CAS 87553-88-6)
- 4,7-Dichlorobenzo[d]thiazol-2(3H)-one (CAS 87553-89-7)
- 5,6-Dichlorobenzo[d]thiazol-2(3H)-one (CAS 98279-10-8)
- 5,6-dichlorobenzo[c][1,2,5]thiadiazol-4-amine (CAS 383405-77-4)
- 5,7-Dichlorobenzo[d]thiazol-2-amine (CAS 158465-13-5)
Recommended Standards
- 5,7-Dichloro-2-methylthiazolo[5,4-d]pyrimidine (CAS 7464-11-1)
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- 5,7-Dichloro-2-methylthiazolo[4,5-d]pyrimidine (CAS 859796-00-2)
- 6,8-Dichloro-[1,2,4]triazolo[4,3-a]pyridine-3-thiol (CAS 243444-81-7)
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