Benzo[d]isothiazol-5-ol CAS 75608-07-0
| CAS No. | 75608-07-0 |
| Molecular Formula | C7H5NOS |
| Molecular Weight | 151.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 151.19 g/mol gives Benzo[d]isothiazol-5-ol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Benzo[d]isothiazol-5-ol (CAS 75608-07-0), a certified reference material (molecular formula C7H5NOS, MW 151.19 g/mol) for analytical method development and quality control.
The molecular framework of Benzo[d]isothiazol-5-ol (C7H5NOS) is characterized by an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Benzo[d]isothiazol-5-ol 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 | C7H5NOS |
| Molecular Weight | 151.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | 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.) | 1978 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Benzo Standards
- Benzo[d]isothiazol-7-ol (CAS 147317-39-3)
- Benzo[d][1,2,3]thiadiazol-7-amine (CAS 1753-30-6)
- Benzo[d][1,2,3]thiadiazol-6-amine (CAS 41972-62-7)
- Benzo[d]isoxazole-3(2H)-thione (CAS 69528-56-9)
- Benzo[d]oxazole-2-thiol (CAS 2382-96-9)
- Benzo[d][1,3]dioxol-4-ylmethanamine (CAS 182634-34-0)
- 4H-benzo[d][1,3]dioxin-6-amine (CAS 22791-64-6)
- Benzo[d]isoxazole-4,6-diol (CAS 55477-51-5)
Recommended Standards
- 5-Hydroxybenzothiazole (CAS 7686-41-1)
- benzothiazol-4-ol (CAS 7405-23-4)
- 5-Amino-2,1,3-benzothiadiazole (CAS 874-37-3)
- Imidazo[1,2-a]pyrazine-6-thiol (CAS 763916-91-2)
- 2-Ethyl-6-methylisonicotinic acid ethyl ester (CAS 1122091-59-1)
- 5-fluoro-2-(3-methoxypropanamido)benzoic acid (CAS 1099091-63-0)
- 2-Bromo-5-isopropyl-1,3-oxazole (CAS 1600230-26-9)
- 2-(4-Methyl-4h-1,2,4-triazol-3-yl)benzoic acid (CAS 1247382-33-7)
- Dabigatran Impurity 33 (CAS CATO-C4X-108933)
- 1-(Benzyloxy)-4-(cyclopropylmethyl)benzene (CAS 868699-62-1)
- 2-Chloro-n-{[1-(2,3-dihydro-1,4-benzodioxin-6-yl)cyclopentyl]methyl}acetamide (CAS 897313-58-5)
- N-Phenyl-1H-benzo[d]imidazol-2-amine (CAS 21578-58-5)
- 4-(5,5-Dimethyl-1,3,2-dioxaborinan-2-yl)-2-fluoropyridine (CAS 1003858-52-3)
- Semaglutide (CAS CATO-C4X-2226105)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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