Benzo[d]isothiazole 1,1-dioxide CAS 5669-05-6
| CAS No. | 5669-05-6 |
| Molecular Formula | C7H5NO2S |
| Molecular Weight | 167.19 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.
Benzo[d]isothiazole 1,1-dioxide (CAS 5669-05-6), molecular formula C7H5NO2S and molecular weight 167.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H5NO2S, Benzo[d]isothiazole 1,1-dioxide contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 167.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures Benzo[d]isothiazole 1,1-dioxide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H5NO2S |
| Molecular Weight | 167.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Benzo Standards
- Benzo[d]thiazole-2,4-diol (CAS 858635-60-6)
- Benzo[d]thiazole-5,6-diol (CAS 2385739-65-9)
- Benzo[d]thiazole-2-thiol (CAS 118090-09-8)
- Benzo[d]thiazole-6-thiol (CAS 854085-71-5)
- Benzo[b]thiophene-2(3H)-thione (CAS 1006386-88-4)
- Benzo[b]thiophene-3-thiol (CAS 17402-89-0)
- Benzo[b]thiophene-2-thiol (CAS 30214-04-1)
- Benzo[b]thiophene-4-thiol (CAS 22069-06-3)
Recommended Standards
- Benzenesulfonyl cyanide (CAS 24224-99-5)
- 8-Amino-5H-purine-6(9H)-thione (CAS 6223-63-8)
- 7-Methyl-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one (CAS 35523-75-2)
- Meradine (CAS 7390-62-7)
- 6-[(2-Chloro-6-fluorophenyl)methyl]pyridazin-3-ol (CAS 320419-50-9)
- tert-Butyl (2-(azetidin-3-yl(methyl)amino)ethyl)carbamate (CAS 1193386-50-3)
- 3-Cyclopropoxy-N-methyl-2-nitrobenzamide (CAS 1243313-53-2)
- (R)-2-Acetamido-3-(4-chlorophenyl)propanoic acid (CAS 135270-40-5)
- Xanthylium, 9-[2-carboxy-4-[(2-propyn-1-ylamino)carbonyl]phenyl]-3,6-bis(dimethylamino)-, inner salt (CAS 945928-17-6)
- 1,2,3-Trimethylcyclohepta[c]pyrrol-6(2H)-one (CAS 57015-32-4)
- Acetamide, n-(1,1-dimethyl-3-oxobutyl)-2,2,2-trifluoro- (CAS 534620-38-7)
- 3,6-Dichloro-N-(4-methyl-3-nitrophenyl)benzo[b]thiophene-2-carboxamide (CAS 332157-37-6)
- Colesevelam Amino Dihexylquat Impurity HBr (Amino Dihexyltrimethylammonium Bromide HBr) (CAS 2170771-70-5)
- Semaglutide impurity 70 (CAS CATO-C4X-222670)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com