3-Methoxy-4-methylisoxazole-5-carboxylic acid CAS 1780322-20-4
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1780322-20-4 |
| Molecular Formula | C6H7NO4 |
| Molecular Weight | 157.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Methoxy-4-methylisoxazole-5-carboxylic acid (CAS 1780322-20-4) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C6H7NO4. Molecular weight: 157.12 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C6H7NO4 |
| Molecular Weight | 157.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 1 |
Related Methoxy Standards
- 2-(3-Methoxy-5-isoxazolyl)acetic Acid (CAS 16877-55-7)
- 3-Methoxy-5-methylisoxazole-4-carboxylic acid (CAS 16877-56-8)
- methyl 5-methoxy-1,2-oxazole-4-carboxylate (CAS 1909327-18-9)
- 5-Methoxy-3-methylisoxazole-4-carboxylic acid (CAS 25786-79-2)
- 3-methoxy-1-methyl-4-nitro-pyrazole (CAS 1201935-85-4)
- 5-Methoxy-3-methyl-4-nitro-1h-pyrazole (CAS 173682-19-4)
- (2-Methoxy-ethyl)-(2,2,2-trifluoro-ethyl)-amine (CAS 883545-52-6)
- 4-Methoxy-1-methyl-1H-1,2,3-triazole-5-carboxylic acid (CAS 716362-00-4)
Recommended Standards
- 3-(hydroxymethyl)-5-methyl-1,2-oxazole-4-carboxylic acid (CAS 1779855-86-5)
- 5-Amino-2,3-difluorobenzaldehyde (CAS 1823338-39-1)
- 3-(2-Hydroxyethoxy)isoxazole-5-carbaldehyde (CAS 173038-75-0)
- (3-((4-(Tert-butyl)-2-methylphenoxy)methyl)phenyl)boronic acid (CAS 1072951-66-6)
- Chlorodimethyl(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-n-octyl)silane (CAS 102488-47-1)
- 4,6-Dimethoxypyrimidine-2-methanol (CAS 125966-88-3)
- Xanthinosin (CAS 55555-39-0)
- Levetiracetam Impurity 30 (CAS 5959-29-5)
- 2-chloro-1-(piperidin-1-yl)propan-1-one (CAS 66203-96-1)
- Brain Injury Derived Neurotrophic Peptide (H-3914.0001) (CAS 148330-12-5)
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 13829788188 / jacky.chen@cato-chem.com