Isoxazolo[5,4-b]pyridin-3-ol CAS 16880-54-9
| CAS No. | 16880-54-9 |
| Molecular Formula | C6H4N2O2 |
| Molecular Weight | 136.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Isoxazolo[5,4-b]pyridin-3-ol (CAS 16880-54-9), a certified reference material (molecular formula C6H4N2O2, MW 136.11 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Isoxazolo[5,4-b]pyridin-3-ol is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 136.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Isoxazolo[5,4-b]pyridin-3-ol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H4N2O2 |
| Molecular Weight | 136.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 2 |
Related Isoxazolo Standards
- Isoxazolo[4,5-b]pyridin-3(2H)-one (CAS 122019-40-3)
- Isoxazolo[5,4-c]pyridazin-3-amine (CAS 1543119-63-6)
- Isoxazolo[4,5-b]pyrazin-3-amine (CAS 81411-79-2)
- Isoxazolo[5,4-c]pyridin-3(2H)-one (CAS 847996-42-3)
- Isoxazolo[5,4-d]pyrimidin-4-amine (CAS 632291-82-8)
- Isoxazolo[4,5-b]pyridin-3-amine (CAS 114080-93-2)
- Isoxazolo[5,4-c]pyridin-3-amine (CAS 114080-94-3)
- Isoxazolo[4,5-c]pyridin-3-amine (CAS 1229383-25-8)
Recommended Standards
- 3,3'-Biisoxazole (CAS 16840-55-4)
- 1H-Pyrazolo[4,3-d]pyrimidin-7(7aH)-one (CAS 179042-24-1)
- 4-Amino-2-hydroxypyrimidine-5-carbonitrile (CAS 16462-28-5)
- 2H-Pyrazolo[4,3-d]pyrimidin-7(6H)-one (CAS 1797409-86-9)
- 2-(4-(Ethylsulfonyl)piperazin-1-yl)ethan-1-amine (CAS 1018527-64-4)
- 4-[(3-hydroxypropyl)sulfanyl]benzoic acid (CAS 254910-61-7)
- (4S,5S)-5-(Hydroxymethyl)-3-isopropyl-4-methyloxazolidin-2-one (CAS 112395-65-0)
- (2-methyl-4-nitrophenyl)methanol (CAS 22162-15-8)
- (R)-tert-Butyl 3-(2-chloro-N-cyclopropylacetamido)pyrrolidine-1-carboxylate (CAS 1354019-77-4)
- Erlotinib Impurity 72 (CAS CATO-C4X-106972)
- (2S)-Methyl 4-(pyridin-3-yl)pyrrolidine-2-carboxylate (CAS 1957130-76-5)
- 2,3,4,5-Tetrafluoro-1,1'-biphenyl (CAS 1210-31-7)
- (2R,4S)-methyl 4-acetamido-2-(4-chlorobenzyl)piperidine-1-carboxylate (CAS 177707-17-4)
- Neuropeptide VF (124-131) (human) (CAS 311309-27-0)
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