Benzo[d]thiazole-2,4-diol CAS 858635-60-6
| CAS No. | 858635-60-6 |
| Molecular Formula | C7H5NO2S |
| Molecular Weight | 167.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Benzo[d]thiazole-2,4-diol.
Benzo[d]thiazole-2,4-diol (CAS 858635-60-6) is a high-purity analytical reference standard with the molecular formula C7H5NO2S and a molecular weight of 167.19 g/mol.
Benzo[d]thiazole-2,4-diol (C7H5NO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | 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.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Benzo Standards
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- Benzo[d]thiazole-6-thiol (CAS 854085-71-5)
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Recommended Standards
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- 2-Bromo-6-chloro-3-methylphenylboronic acid (CAS 1309980-97-9)
- 5-piperidin-1-yl-4-(tetrahydrofuran-2-ylmethyl)-4H-1,2,4-triazole-3-thiol (CAS 923124-24-7)
- Lafutidine Impurity 2 (CAS 174583-84-7)
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