4-Methoxy-1,2-benzisothiazole CAS 35272-30-1
| CAS No. | 35272-30-1 |
| Molecular Formula | C8H7NOS |
| Molecular Weight | 165.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C8H7NOS, 4-Methoxy-1,2-benzisothiazole contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 165.21 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).
4-Methoxy-1,2-benzisothiazole (CAS 35272-30-1), molecular formula C8H7NOS and molecular weight 165.21 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C8H7NOS |
| Molecular Weight | 165.21 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.) | 1967 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methoxy Standards
- (3-methoxy-1,1-dioxo-thietan-3-yl)methanamine (CAS 1785196-99-7)
- 4-Methoxy-1,2-thiazinane 1,1-dioxide (CAS 291514-18-6)
- 5-methoxy-1,3-benzothiazole (CAS 2942-14-5)
- 2-(3-Methoxy-5-methylphenyl)ethan-1-amine (CAS 1000520-77-3)
- (4-Methoxy-3,5-dimethylbenzyl)amine (CAS 1039927-88-2)
- 1-(2-Methoxy-5-methylphenyl)ethanamine (CAS 104338-22-9)
- [1-(4-Methoxy-3-methylphenyl)ethyl]amine (CAS 104338-23-0)
- 2-Methoxy-2-(2-methylphenyl)ethan-1-amine (CAS 104338-28-5)
Recommended Standards
- 4-Hydroxybenzyl isothiocyanate (CAS 2086-86-4)
- 4-(Methylsulfinyl)benzonitrile (CAS 97474-48-1)
- 4-Methyl-2(3H)-benzothiazolone (CAS 73443-84-2)
- 4-(2-Furyl)-2-methylthiazole (CAS 492440-71-8)
- 6-Amino-1H-benzo[d]imidazole-4-carbonitrile (CAS 1802927-83-8)
- 3-(2-Hydroxypyrimidin-5-yl)benzaldehyde (CAS 1111104-14-3)
- 5-Methyl-3-(4-(methylthio)phenyl)pyridin-2-amine (CAS 217090-18-1)
- 4-Methyl-N-((S)-1-oxo-3-phenyl-1-(((S,E)-5-phenyl-1-(phenylsulfonyl)pent-1-en-3-yl)amino)propan-2-yl)piperazine-1-carboxamide hydrochloride (CAS 502960-92-1)
- 2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-N-(((2R,3S,4S,5R)-3,4,5,6-tetrahydroxytetrahydro-2H-pyran-2-yl)methyl)acetamide (CAS 118377-57-4)
- (5-(4-Chlorophenyl)pyridin-3-yl)methanol (CAS 887974-02-9)
- 2-chloro-4-ethoxy-6-methyl-pyrimidine (CAS 37482-64-7)
- 2-Phenyl-6-(trifluoromethyl)quinoline-4-carbonitrile (CAS 1416439-23-0)
- 4-Amino-2-(trifluoromethyl)-benzenesulfonamide (CAS 363-93-9)
- Semaglutide Impurity 82 (CAS CATO-C4X-222682)
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