4,5-Dichloropyridazine-3,6-diol CAS 6641-32-3
| CAS No. | 6641-32-3 |
| Molecular Formula | C4H2Cl2N2O2 |
| Molecular Weight | 180.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 4,5-Dichloropyridazine-3,6-diol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 180.98 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
4,5-Dichloropyridazine-3,6-diol (CAS 6641-32-3), molecular formula C4H2Cl2N2O2 and molecular weight 180.98 g/mol, is a CATO reference standard with documented purity and traceability.
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-Dichloropyridazine-3,6-diol 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 | C4H2Cl2N2O2 |
| Molecular Weight | 180.98 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloropyridazine Standards
- 3,6-Dichloropyridazine-4-carbonitrile (CAS 35857-93-3)
- 4,6-Dichloropyridazine-3-carbonitrile (CAS 35857-90-0)
- 4,6-Dichloropyridazine-3-carboxamide (CAS 1609394-50-4)
- 3,6-Dichloropyridazine-4-carboxamide (CAS 27427-66-3)
- 4,6-Dichloropyridazine-3-carboxylic Acid (CAS 1040246-87-4)
- 3,6-dichloropyridazine 1-oxide (CAS 25974-26-9)
- 3,6-Dichloropyridazine-4-carboxylic acid 3,6-dichloropyridazinecarboxylic acid 3,6-dichloro-4-pyridazinecarboxylic acid 3,6-dichloro-pyridazine-4-carboxylic acid 51149-08-7 (CAS 51149-08-7)
- 3,4-dichloropyridazine (CAS 1677-80-1)
Recommended Standards
- 4,5-Dichloro-1h-imidazole-2-carboxylic acid (CAS 64736-53-4)
- 4-Bromo-3-oxobutanoic Acid (CAS 27807-85-8)
- 3-Iodopropanenitrile (CAS 2517-76-2)
- 5,6-Dichloropyrimidine-2,4-diol (CAS 21428-20-6)
- Ethyl 2-Aminopyridine-5-carboxylate (CAS 39658-41-8)
- 4-(4-Hydroxyphenyl)phthalazin-1-ol (CAS 152594-70-2)
- 879008-22-7 (2Z)-3-(4-Hydroxyphenyl)-2-phenylacrylic acid MFCD00613515 (CAS 879008-22-7)
- Adenosine-2-d1 (CAS 109923-50-4)
- Ethyl 3,5-difluoro-2-methoxybenzoate (CAS 1008138-31-5)
- 8-Hydroxyquinoline-4-carbaldehyde (CAS 14510-07-7)
- 1-(2-Bromoquinolin-4-yl)ethan-1-one (CAS 894789-58-3)
- (Z)-4-Acetoxy-3-(4-(methylsulfonyl) phenyl)-2-phenylbut-2-enoic acid (CAS 179174-79-9)
- Tepotinib impurity 10 (CAS CATO-C4X-337410)
- (Des-Bromo)-Neuropeptide B (1-23) (human) (CAS 434897-64-0)
Why CATO?
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