5,7-Dimethoxybenzo[d]isothiazol-3(2H)-one 1,1-dioxide CAS 64404-51-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 64404-51-9 |
| Molecular Formula | C9H9NO5S |
| Molecular Weight | 243.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,7-Dimethoxybenzo[d]isothiazol-3(2H)-one 1,1-dioxide (CAS 64404-51-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C9H9NO5S. Molecular weight: 243.24 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C9H9NO5S |
| Molecular Weight | 243.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dimethoxybenzo Standards
- 4,6-Dimethoxybenzo[d]isothiazole-3-carboxylic acid (CAS 21544-87-6)
- 1-(5,6-Dimethoxybenzo[b]thiophen-2-yl)ethan-1-one (CAS 108952-49-4)
- 4,5-Dimethoxybenzo[b]thiophene-2-carbohydrazide (CAS 1263206-36-5)
- Methyl 4,5-dimethoxybenzo[b]thiophene-2-carboxylate (CAS 1263209-72-8)
- 5,6-Dimethoxybenzo[b]thiophene-2-carbohydrazide (CAS 1263215-28-6)
- 1-(4,6-Dimethoxybenzo[d][1,3]dioxol-5-yl)ethanol (CAS 2169908-23-8)
- 4,6-Dimethoxybenzo[d][1,3]dioxole-5-carboxylic acid (CAS 68803-44-1)
- 6,7-Dimethoxybenzo[d][1,3]dioxole-5-carboxylic acid (CAS 22027-56-1)
Recommended Standards
- 5,6-dimethoxy-2,3-dihydro-1$l^{6},2-benzothiazole-1,1,3-trione (CAS 60987-22-6)
- 5-Acetyl-4-amino-1-(4-fluorophenyl)-1H-pyrrole-3-carbonitrile (CAS 889997-40-4)
- 4-((1H-Pyrrolo[2,3-b]pyridin-4-yl)oxy)-3-fluoroaniline (CAS 688781-75-1)
- Agatholal (CAS 3650-31-5)
- 2-(P-tolyloxy)benzenesulfonylchloride (CAS 206262-15-9)
- 4-Amino-n-cyclohexylpiperidine-1-carboxamide hydrochloride (CAS 1158602-24-4)
- 4-Bromo-1-(3-methoxy-4-nitrophenyl)piperidine (CAS 1242268-15-0)
- 4-(Aminomethyl)-4-methylcyclohexan-1-ol (CAS 1538664-35-5)
- 1,2,3,4-Tetrahydroisoquinoline-6,7-diol (CAS 34827-33-3)
- Tau Peptide (306-336) (Repeat 3 Domain) trifluoroacetate salt (CAS 330456-26-3)
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