1,4-Dichloro-6,7-dimethoxyphthalazine CAS 99161-51-0
| CAS No. | 99161-51-0 |
| Molecular Formula | C10H8Cl2N2O2 |
| Molecular Weight | 259.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1,4-Dichloro-6,7-dimethoxyphthalazine is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1,4-Dichloro-6,7-dimethoxyphthalazine (CAS 99161-51-0) is a high-purity analytical reference standard with the molecular formula C10H8Cl2N2O2 and a molecular weight of 259.09 g/mol.
The molecular framework of 1,4-Dichloro-6,7-dimethoxyphthalazine (C10H8Cl2N2O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
CATO manufactures 1,4-Dichloro-6,7-dimethoxyphthalazine 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 | C10H8Cl2N2O2 |
| Molecular Weight | 259.09 g/mol |
| Appearance | Off-white to pale 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 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 1-(4-Iodophenyl)cyclopropanamine (CAS 630384-20-2)
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- n-Benzyl-3-(1h-pyrazol-1-yl)propanamide (CAS 1185560-38-6)
- 2-Fluoro-6-methoxyquinoline (CAS 1801986-19-5)
- (S)-1-(4-Ethylphenyl)ethanamine hydrochloride (CAS 2459439-16-6)
- Disialyloctasaccharide (CAS 58902-60-6)
- Ethyl 5-Methyloxazole-2-carboxylate (CAS 33123-68-1)
- 1-(2-Hydroxyhexyl)-1-methyl-4-phenylpiperidin-1-ium iodide (CAS 1078611-26-3)
- Semaglutide Impurity 15 (CAS CATO-C4X-222615)
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