6-Chloroisothiazolo[5,4-b]pyridine-3-carboxylic acid CAS 932702-35-7
| CAS No. | 932702-35-7 |
| Molecular Formula | C7H3ClN2O2S |
| Molecular Weight | 214.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
6-Chloroisothiazolo[5,4-b]pyridine-3-carboxylic acid (CAS 932702-35-7) is a high-purity analytical reference standard with the molecular formula C7H3ClN2O2S and a molecular weight of 214.63 g/mol.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 6-Chloroisothiazolo[5,4-b]pyridine-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 214.63 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H3ClN2O2S |
| Molecular Weight | 214.63 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloroisothiazolo Standards
Recommended Standards
- 6-Chloro-2-fluoro-9-isopropyl-9H-purine (CAS 220696-58-2)
- Dipropyl chloromethylphosphonate (CAS 6884-42-0)
- 5-Oxo-5H-thiazolo[3,2-a]pyrimidine-6-carbonyl chloride (CAS 76661-92-2)
- 2-chloranyl-1-isothiocyanato-4-nitro-benzene 2-chloro-1-isothiocyanato-4-nitrobenzene 23165-64-2 A816608 (CAS 23165-64-2)
- 3-(4-Bromo-1h-pyrazol-1-yl)-2-methylpropan-1-amine (CAS 1006481-11-3)
- (1-Methyl-1H-pyrrolo[2,3-b]pyridin-6-yl)methanamine (CAS 1638768-43-0)
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- 2-aminocyclopentane-1-carbonitrile (CAS 80501-45-7)
- (S)-Benzyl 2-(((S)-2-amino-3-methylbutanamido)methyl)pyrrolidine-1-carboxylate (CAS 1401666-62-3)
- Orthosulfamuron (CAS 213464-77-8)
- Methyl 2-amino-2-(1-methyl-1H-pyrazol-3-yl)acetate (CAS 864297-19-8)
- 3-Benzyloxy-4-fluorobenzaldehyde (CAS 103438-91-1)
- tert-Butyl 1-oxo-4-phenyl-2,8-diazaspiro[4.5]decane-8-carboxylate (CAS 897670-78-9)
- Semaglutide Impurity 185 (CAS CATO-C4X-2226185)
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