7-Chlorobenzo[d]isothiazole CAS 89583-90-4
| CAS No. | 89583-90-4 |
| Molecular Formula | C7H4ClNS |
| Molecular Weight | 169.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 169.63 g/mol gives 7-Chlorobenzo[d]isothiazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
7-Chlorobenzo[d]isothiazole (CAS 89583-90-4), molecular formula C7H4ClNS and molecular weight 169.63 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, sulfur-containing functionality, chlorine substitution, an aromatic ring system, 7-Chlorobenzo[d]isothiazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 169.63 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 7-Chlorobenzo[d]isothiazole 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 | C7H4ClNS |
| Molecular Weight | 169.63 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 |
| 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.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chlorobenzo Standards
- 3-Chlorobenzo[c]isothiazole (CAS 34231-96-4)
- 4-Chlorobenzo[d]isothiazole (CAS 25380-61-4)
- 5-Chlorobenzo[c]isothiazole (CAS 20712-05-4)
- 5-Chlorobenzo[d]isothiazole (CAS 41918-07-4)
- 6-Chlorobenzo[d]isothiazole (CAS 89583-89-1)
- 6-Chlorobenzo[d]thiazole (CAS 2942-10-1)
- 7-Chlorobenzo[d]thiazole (CAS 2942-09-8)
- 3-Chlorobenzo[d]isoxazol-7-ol (CAS 155645-24-2)
Recommended Standards
- 6-Chlorothieno[2,3-b]pyridine (CAS 62226-18-0)
- 7-Chlorothieno[2,3-c]pyridine (CAS 28948-58-5)
- 7-Chlorothieno[3,2-b]pyridine (CAS 69627-03-8)
- 5-Chlorothieno[2,3-b]pyridine (CAS 21344-25-2)
- 1-((4-(Benzyloxy)pyridin-3-yl)sulfonyl)piperazine (CAS 1352506-29-6)
- 14-β-Hydroxy-7-O-(triethylsilyl) Baccatin III 1,14-Carbonate (CAS 186347-84-2)
- 2-Chlorophenethyl quinoline-4-carboxylate (CAS 6633-64-3)
- 2-(2-(O-tolylamino)ethoxy)ethan-1-ol (CAS 1248027-69-1)
- 2-Bromo-3-trimethylsilanyl-isonicotinic acid methyl ester (CAS 848243-28-7)
- 3-Methylimidazo[1,2-b]isoquinoline-5,10-dione (CAS 62366-60-3)
- Tamsulosin EP Impurity F HCl (CAS 1051368-80-9)
- 4-Ethyl-5-methylisoxazol-3-ol (CAS 932-12-7)
- 4,6-Dimethyl-[1,2,3]triazolo[1,5-b]pyridazine (CAS 500538-72-7)
- (Glu1)-Fibrinopeptide B (human) (CAS 103213-49-6)
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