5-(6-Chloropyridazin-3-yl)-3-methyl-1,2,4-oxadiazole CAS 944808-72-4
| CAS No. | 944808-72-4 |
| Molecular Formula | C7H5ClN4O |
| Molecular Weight | 196.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-(6-Chloropyridazin-3-yl)-3-methyl-1,2,4-oxadiazole (CAS 944808-72-4), molecular formula C7H5ClN4O and molecular weight 196.59 g/mol, is a CATO reference standard with documented purity and traceability.
5-(6-Chloropyridazin-3-yl)-3-methyl-1,2,4-oxadiazole (C7H5ClN4O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C7H5ClN4O |
| Molecular Weight | 196.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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 |
| 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 | 4 |
Related Chloropyridazin Standards
- 2-(6-Chloropyridazin-3-yl)-5-methyl-1,3,4-oxadiazole (CAS 960492-59-5)
- 2-(6-Chloropyridazin-3-yl)thiazole (CAS 943541-24-0)
- N-(6-Chloropyridazin-3-yl)-N,N-dimethylethanimidamide (CAS 68675-27-4)
- (R)-1-(6-chloropyridazin-3-yl)pyrrolidin-3-ol (CAS 1169698-53-6)
- (S)-1-(6-Chloropyridazin-3-yl)pyrrolidin-3-ol (CAS 1264038-89-2)
- 1-(6-Chloropyridazin-3-yl)pyrrolidin-3-ol (CAS 959240-38-1)
- N-(6-Chloropyridazin-3-yl)butyramide (CAS 868948-12-3)
- 2-(6-Chloropyridazin-3-yl)-2-methylpropanoic acid (CAS 1208309-65-2)
Recommended Standards
- 5-(3-Chlorophenyl)-1,3,4-oxadiazol-2(3H)-one (CAS 85929-41-5)
- 5-Amino-6-chloroisoindoline-1,3-dione (CAS 5566-48-3)
- 5-(2-Chlorophenyl)-3H-1,3,4-oxadiazol-2-one (CAS 83725-77-3)
- 5-Chloro-[1,2,4]triazolo[4,3-a]pyridine-3-carboxamide (CAS 66999-65-3)
- Tert-butyl ethyl(3-(pyrrolidin-2-yl)pyridin-2-yl)carbamate (CAS 1352495-15-8)
- 5-(2-Methylthiazol-4-yl)thiophene-2-carbaldehyde (CAS 499770-66-0)
- 5-Acetyl-1-morpholinopyrimidine-2,4(1H,3H)-dione (CAS 338396-61-5)
- (((4-(Phenyldiazenyl)benzyl)oxy)carbonyl)proline (CAS 194541-47-4)
- Dodecene-1 LAS (CAS 68628-60-4)
- Dexamethasone 21-Propionate (CAS 3793-10-0)
- N-Benzyl-2,2,2-trifluoroacetamide (CAS 7387-69-1)
- n-[4-(2-amino-1,3-thiazol-4-yl)phenyl]-3-methylbutanamide (CAS 852851-65-1)
- (4-Fluoro-1-naphthalenyl)[1-(5-fluoropentyl)-1H-indol-3-yl]methanone (CAS 1391485-39-4)
- Akt/SKG Substrate Peptide (CAS 276680-69-4)
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