Isothiazolo[5,4-b]pyridin-3-ol CAS 4337-60-4
| CAS No. | 4337-60-4 |
| Molecular Formula | C6H4N2OS |
| Molecular Weight | 152.17 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.
Isothiazolo[5,4-b]pyridin-3-ol (CAS 4337-60-4), molecular formula C6H4N2OS and molecular weight 152.17 g/mol, is a CATO reference standard with documented purity and traceability.
Isothiazolo[5,4-b]pyridin-3-ol (C6H4N2OS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures Isothiazolo[5,4-b]pyridin-3-ol under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H4N2OS |
| Molecular Weight | 152.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Isothiazolo Standards
- Isothiazolo[4,5-b]pyrazin-3-amine (CAS 92914-68-6)
- Isothiazolo[4,5-c]pyridin-3-amine (CAS 1367990-09-7)
- Isothiazolo[3,4-c]pyridin-3-amine (CAS 150364-74-2)
- Isothiazolo[5,4-c]pyridin-3-amine (CAS 150364-77-5)
- Isothiazolo[4,3-b]pyridin-3-ylamine (CAS 42242-13-7)
- Isothiazolo[4,5-b]pyridin-3-amine (CAS 2089325-25-5)
- Isothiazolo[5,4-b]pyridin-3-amine (CAS 56891-64-6)
- Isothiazolo[5,4-d]pyrimidin-4-ol (CAS 1498711-48-0)
Recommended Standards
- Imidazo[5,1-b]thiazole-2-carbaldehyde (CAS 268552-79-0)
- Isoxazolo[5,4-d][1,3]thiazepine (CAS 27629-49-8)
- Imidazo[2,1-b]thiazole-2-carbaldehyde (CAS 933722-72-6)
- Methyl Methanesulfonylacetate (CAS 62020-09-1)
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- 1-(4-Fluoro-2-hydroxy-3-nitrophenyl)ethan-1-one (CAS 1268629-01-1)
- (S)-1-Benzyl-6-(2-hydroxyethyl)piperazine-2,5-dione (CAS 2649789-07-9)
- 2,2-Difluoro-2-(1-hydroxycyclopentyl)acetic acid (CAS 681240-10-8)
- 4-Fluoro-3-nitrophenylacetic Acid (CAS 192508-36-4)
- tert-Butyl (2S,5S)-2,5-diethylpiperazine-1-carboxylate (CAS 1240588-46-8)
- 1-Methyl-3-propyl-3-(m-tolyl)pyrrolidine (CAS 793603-37-9)
- Semaglutide Impurity 125 xTFA Salt (CAS CATO-C4X-2226125)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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