4,5-Dichloro-2-(4,6-dimethylpyrimidin-2-yl)-2,3-dihydropyridazin-3-one CAS 78403-59-5
| CAS No. | 78403-59-5 |
| Molecular Formula | C10H8Cl2N4O |
| Molecular Weight | 271.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,5-Dichloro-2-(4,6-dimethylpyrimidin-2-yl)-2,3-dihydropyridazin-3-one (CAS 78403-59-5), molecular formula C10H8Cl2N4O and molecular weight 271.10 g/mol, is a CATO reference standard with documented purity and traceability.
4,5-Dichloro-2-(4,6-dimethylpyrimidin-2-yl)-2,3-dihydropyridazin-3-one (C10H8Cl2N4O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; 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.
CATO manufactures 4,5-Dichloro-2-(4,6-dimethylpyrimidin-2-yl)-2,3-dihydropyridazin-3-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H8Cl2N4O |
| Molecular Weight | 271.10 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Dichloro Standards
- Ethyl 4,8-dichloro-1,7-naphthyridine-3-carboxylate (CAS 1093114-45-4)
- Ethyl 2,4-dichloro-1,6-naphthyridine-3-carboxylate (CAS 1186189-34-3)
- Ethyl 2,4-dichloro-1,5-naphthyridine-3-carboxylate (CAS 1312605-84-7)
- 4,6-Dichloro-5-(2-methoxyphenoxy)pyrimidine (CAS 150727-23-4)
- 2,4-Dichloro-N-(5-methylisoxazol-3-yl)benzamide (CAS 160856-95-1)
- 2,5-Dichloro-4-(4-methoxyphenoxy)pyrimidine (CAS 358978-09-3)
- 2,6-Dichloro-4-(3-hydroxyphenoxy)phenol (CAS 2031170-79-1)
- 4,5-Dichloro-2-(4-methoxyphenyl)-2,3-dihydropyridazin-3-one (CAS 41933-34-0)
Recommended Standards
- 4-(Trifluoromethylthio)benzyl Bromide (CAS 21101-63-3)
- 3,4-DIHYDRO-5-(4-IODOPHENYL)-2H-PYRROLE (CAS 374589-01-2)
- 4,6-Dichloro-N-(2-methoxyphenyl)-1,3,5-triazin-2-amine (CAS 30369-87-0)
- 3-(Trifluoromethylthio)benzyl bromide (CAS 213203-84-0)
- Doxorubicinone Valerate (CAS 158699-93-5)
- 2-O-Benzyl-D-glucose (CAS 41897-85-2)
- 8-Methylbenzo[d][1,2,3]triazin-4(3H)-one (CAS 1008742-16-2)
- n-(cyclopropylmethyl)-2-(3,4-dimethoxyphenyl)ethan-1-amine (CAS 56100-68-6)
- 3-Amino-5-ethyl-2,6-dimethylthieno[2,3-d]pyrimidin-4(3h)-one (CAS 832740-48-4)
- 2-(5-Cyclopentyl-1,2,4-oxadiazol-3-yl)morpholine hydrochloride (CAS 1707602-55-8)
- 3-(4-Amino-2-methylphenoxy)-N,N-dimethylaniline (CAS 946698-68-6)
- Gallium oxide (Ga2O3) (CAS 861841-19-2)
- 6-Bromo-5-(difluoromethyl)-4-fluoropicolinonitrile (CAS 1804659-78-6)
- Semaglutide impurity 45 (CAS CATO-C4X-222645)
Why CATO?
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