3,6-Dimethyl-7-oxo-6,7-dihydroisoxazolo[3,4-d]pyridazine-4-carboxylic acid CAS 1249969-05-8
| CAS No. | 1249969-05-8 |
| Molecular Formula | C8H7N3O4 |
| Molecular Weight | 209.16 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 3,6-Dimethyl-7-oxo-6,7-dihydroisoxazolo[3,4-d]pyridazine-4-carboxylic acid.
3,6-Dimethyl-7-oxo-6,7-dihydroisoxazolo[3,4-d]pyridazine-4-carboxylic acid (CAS 1249969-05-8) is a high-purity analytical reference standard with the molecular formula C8H7N3O4 and a molecular weight of 209.16 g/mol.
3,6-Dimethyl-7-oxo-6,7-dihydroisoxazolo[3,4-d]pyridazine-4-carboxylic acid (C8H7N3O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C8H7N3O4 |
| Molecular Weight | 209.16 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
Related Dimethyl Standards
- 6,8-Dimethyl-5,7-dioxo-5,6,7,8-tetrahydropyrimido[5,4-e][1,2,4]triazine 4-oxide (CAS 62758-20-7)
- 1,3-Dimethyl-3-(Trifluoroacetyl)-2-Pyrrolidinone (CAS 173549-69-4)
- 1,3-Dimethyl-4-nitro-5-(trifluoromethyl)-1h-pyrazole (CAS 1005576-58-8)
- 1,5-Dimethyl-4-nitro-3-(trifluoromethyl)-1h-pyrazole (CAS 1245771-61-2)
- 1,3-dimethyl-5,8-dihydropyrido[2,3-d]pyrimidine-2,4,7(1H,3H,6H)-trione (CAS 10001-46-4)
- 4-((1,5-Dimethyl-1H-pyrazol-4-yl)amino)-4-oxobut-2-enoic acid (CAS 1006169-53-4)
- 3-(1,3-Dimethyl-1h-pyrazol-4-yl)-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 1006454-88-1)
- 3-(1,5-Dimethyl-1h-pyrazol-4-yl)-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 1006496-70-3)
Recommended Standards
- 1-[(5-methyl-1,2,4-oxadiazol-3-yl)methyl]-1h-1,2,3-triazole-4-carboxylic acid (CAS 1247778-45-5)
- 5-Nitro-2,3-dihydrobenzofuran-2-carboxylic acid (CAS 1260788-45-1)
- Methyl 3-methyl-7-oxo-6,7-dihydroisoxazolo[3,4-d]pyridazine-4-carboxylate (CAS 1240529-59-2)
- N-(2,5-Dioxotetrahydro-3-furanyl)-2-furamide (CAS 1269442-33-2)
- (S)-2-amino-4-(2-chlorophenyl)butanoic acid (CAS 1260611-09-3)
- Thieno[3,4-b]pyridine-5,7-diamine (CAS 861100-75-6)
- 6YI1QB4VWJ 22809-37-6 6-Bromohexanoyl chloride Hexanoyl chloride, 6-bromo- EINECS 245-236-7 UNII-6YI1QB4VWJ (CAS 22809-37-6)
- 3-(4-Isopropylphenyl)-2-oxopropanoic acid (CAS 112805-46-6)
- 1-(4-Carboxyphenyl)-6-oxo-1,4,5,6-tetra-hydropyridazine-3-carboxylic acid 3247AF 920464-96-6 C12H10N2O5 (CAS 920464-96-6)
- 2,4-Dichloro-8-methylbenzo[b]thieno[3,2-f][1,4]oxazepine (CAS 1418130-87-6)
- 2-(3,5-Dibromo-1H-1,2,4-triazol-1-yl)-1-(3-nitrophenyl)ethan-1-one (CAS 1240573-33-4)
- (4-Chloro-2-fluorobenzyl)(3-fluorophenyl)sulfane (CAS 1443314-06-4)
- 4-((5-Methylheptan-3-yl)amino)butan-2-ol (CAS 1342559-99-2)
- Neuropeptide FF (CAS 99566-27-5)
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 18665070610 / Nicole.chen@cato-chem.com