6-Chloro-7-methyl-[1,2,4]triazolo[1,5-b]pyridazine CAS 51519-27-8
| CAS No. | 51519-27-8 |
| Molecular Formula | C6H5ClN4 |
| Molecular Weight | 168.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 168.58 g/mol gives 6-Chloro-7-methyl-[1,2,4]triazolo[1,5-b]pyridazine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
6-Chloro-7-methyl-[1,2,4]triazolo[1,5-b]pyridazine (CAS 51519-27-8) is a high-purity analytical reference standard with the molecular formula C6H5ClN4 and a molecular weight of 168.58 g/mol.
Based on its molecular formula C6H5ClN4, 6-Chloro-7-methyl-[1,2,4]triazolo[1,5-b]pyridazine contains a nitrile group, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 168.58 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C6H5ClN4 |
| Molecular Weight | 168.58 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
- 6-Chloro-1H-pyrrolo[3,2-c]pyridin-2(3H)-one (CAS 1000342-80-2)
- 4-Chloro-2-methoxypyridine-3-carbonitrile (CAS 1008451-56-6)
- 6-Chloro-2-methyl-9H-purine (CAS 100859-35-6)
- 3-chloro-6-methyl-[1,2,4]triazolo[4,3-a]pyrimidine (CAS 1019033-24-9)
- 2-Chloro-8-methyl-9H-purine (CAS 1023813-16-2)
- 2-Chloro-5-methylfuro[2,3-d]pyrimidine (CAS 1030377-49-1)
- 7-chloro-5-methyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 1055057-37-8)
- 2-Chloro-6-hydrazinylpyridine-4-carbonitrile (CAS 107445-56-7)
Recommended Standards
- 6-Chloro-5-methyl-1H-pyrazolo[3,4-b]pyrazine (CAS 2375920-14-0)
- 6-Chloro-7-methyl-[1,2,4]triazolo[4,3-b]pyridazine (CAS 58826-39-4)
- 6-Chloro-3-methylpyrazolo[3,4-d]pyrimidine (CAS 871254-63-6)
- 6-Chloro-7-methyl-7H-purine (CAS 5440-17-5)
- 2-({7-methyl-4-oxo-1h,2h,3h,4h-cyclopenta[c]chromen-9-yl}oxy)acetic acid (CAS 307549-54-8)
- 1-amino-3,5-bis(2,2,2-trifluoroethyl)-1,3,5-triazinane-2,4,6-trione (CAS 1803607-57-9)
- 3,4-Dihydro-1H-2-benzopyran-1-carbaldehyde (CAS 83501-37-5)
- N-(2-Benzoyl-3-oxo-2,3-dihydro-1,2,4-thiadiazol-5-yl)-4-methylbenzamide (CAS 477845-30-0)
- Tegoprazan Impurity 119 (CAS CATO-C4X-2297119)
- 2-Methyl-4-phenylquinolin-7-ol (CAS 92855-40-8)
- 7-Methoxy-2-(trifluoromethyl)pyrazolo[1,5-a]pyridin-4-amine (CAS 1454802-86-8)
- 2-Amino-5-(bromomethyl)-6-(difluoromethyl)pyridin-3-ol (CAS 1805214-22-5)
- 2-(1,3-Dioxaindan-5-yl)-1,3-thiazole-4-carbaldehyde (CAS 885278-54-6)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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