Benzo[d]isoxazole-3(2H)-thione CAS 69528-56-9
| CAS No. | 69528-56-9 |
| Molecular Formula | C7H5NOS |
| Molecular Weight | 151.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Benzo[d]isoxazole-3(2H)-thione (CAS 69528-56-9), molecular formula C7H5NOS and molecular weight 151.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H5NOS, Benzo[d]isoxazole-3(2H)-thione contains an amide group, sulfur-containing functionality, 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 151.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 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.) | 1976 |
| 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]isothiazol-5-ol (CAS 75608-07-0)
- 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
- benzothiazol-4-ol (CAS 7405-23-4)
- Imidazo[1,2-a]pyrazine-6-thiol (CAS 763916-91-2)
- 5-Hydroxybenzothiazole (CAS 7686-41-1)
- Imidazo[1,5-a]pyrazine-3(2H)-thione (CAS 56488-16-5)
- 6-(Pyridin-3-yl)-9H-purine (CAS 918537-05-0)
- 4-Butoxy-N-[4-(isopentyloxy)benzyl]aniline (CAS 1040687-57-7)
- (5-Bromo-2-methoxy-4-methylphenyl)methanol (CAS 1492320-95-2)
- (E)-N-Cyclopropylpropan-1-imine (CAS 27845-64-3)
- 2-(1-Bromovinyl)pyridine (CAS 67200-49-1)
- Methyl 2-(5-((ethoxycarbonyl)amino)-1,2,4-thiadiazol-3-yl)acetate (CAS 150215-07-9)
- Methyl 3-[3-(3-methoxy-3-oxopropyl)phenyl]propanoate (CAS 6221-61-0)
- (2-Chloro-4-methoxyphenyl)hydrazine hydrochloride (CAS 2109805-82-3)
- 4,4'-(2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-diyl)bis(N,N-bis(4-methoxyphenyl)aniline) (CAS 1622008-73-4)
- Semaglutide Impurity 188 (CAS CATO-C4X-2226188)
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