Ethyl 3-chloro-5H,6H,7H,8H-pyrido[4,3-c]pyridazine-6-carboxylate CAS 39715-99-6
| CAS No. | 39715-99-6 |
| Molecular Formula | C10H12ClN3O2 |
| Molecular Weight | 241.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 241.67 g/mol gives Ethyl 3-chloro-5H,6H,7H,8H-pyrido[4,3-c]pyridazine-6-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 3-chloro-5H,6H,7H,8H-pyrido[4,3-c]pyridazine-6-carboxylate (CAS 39715-99-6) is a high-purity analytical reference standard with the molecular formula C10H12ClN3O2 and a molecular weight of 241.67 g/mol.
Based on its molecular formula C10H12ClN3O2, Ethyl 3-chloro-5H,6H,7H,8H-pyrido[4,3-c]pyridazine-6-carboxylate contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 241.67 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.
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.
As a certified reference material (CRM), Ethyl 3-chloro-5H,6H,7H,8H-pyrido[4,3-c]pyridazine-6-carboxylate 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 | C10H12ClN3O2 |
| Molecular Weight | 241.67 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 sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
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- 1-(4-Amino-1h-pyrazol-1-yl)-3-(pyrrolidin-1-yl)propan-2-ol (CAS 1152896-64-4)
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- 2-Hydroxy-3-nitro-5-(trifluoromethoxy)benzaldehyde (CAS 2149597-24-8)
- 2-Propenoic acid, 2-methyl-, 2-(dimethylamino)ethyl ester, sulfate, homopolymer (CAS 61552-88-3)
- (1R,2R,3S,5S)-2-Hydroxy-6-oxabicyclo[3.1.0]hexane-3-methanol (CAS 905580-84-9)
- TGF-beta RI Kinase Inhibitor III (CAS 356559-13-2)
- 4-Amino-2-bromo-5-fluorobenzoic acid (CAS 1196693-87-4)
- 3-(Boc-amino)-1-Cbz-4-(hydroxymethyl)pyrrolidine (CAS 1255099-67-2)
- tert-Butyl ((1-(2,3-dihydrobenzo[b][1,4]dioxine-2-carbonyl)piperidin-2-yl)methyl)carbamate (CAS 1353948-19-2)
- Semaglutide impurity 88 (CAS CATO-C4X-222688)
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