1-(4-Chlorophenyl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxylic acid CAS 926232-59-9
| CAS No. | 926232-59-9 |
| Molecular Formula | C11H9ClN2O3 |
| Molecular Weight | 252.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-(4-Chlorophenyl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxylic acid 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-Chlorophenyl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxylic acid (CAS 926232-59-9), molecular formula C11H9ClN2O3 and molecular weight 252.65 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(4-Chlorophenyl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxylic acid (C11H9ClN2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 252.65 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 1-(4-Chlorophenyl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxylic acid 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 | C11H9ClN2O3 |
| Molecular Weight | 252.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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 methanol, ethanol, DMSO |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 2-[1-(3-chlorophenyl)-5-oxo-4,5-dihydro-1H-pyrazol-3-yl]acetic acid (CAS 1094331-77-7)
- 1-(4-Chlorophenyl)-5-methyl-2-oxo-2,3-dihydro-1H-imidazole-4-carboxylic acid (CAS 14058-89-0)
- Ethyl 3-(4-chlorophenyl)-1,2,4-oxadiazole-5-carboxylate (CAS 163719-69-5)
- 1-(2-Chlorophenyl)-5-methoxy-1H-pyrazole-3-carboxylic acid (CAS 55983-86-3)
- 1-(2-Chlorophenyl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxylic acid (CAS 926270-80-6)
- 1-(3-Chlorophenyl)-5-methoxy-1H-pyrazole-3-carboxylic acid (CAS 55983-75-0)
- 1-(3-Chlorophenyl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxylic acid (CAS 893723-85-8)
- 1-(4-Chlorophenyl)-5-methoxy-1H-pyrazole-3-carboxylic acid (CAS 54709-10-3)
Recommended Standards
- 2-((4-Methyl-2-oxo-2H-chromen-7-yl)oxy)acetyl chloride (CAS 91454-65-8)
- 1-(4-Chlorophenoxymethyl)-1h-pyrazole-5-carboxylic acid (CAS 925200-01-7)
- 2-[(7-Chloro-2-quinoxalinyl)oxy]propanoic acid (CAS 347162-50-9)
- 2-Chloro-5,7-dimethoxynaphthalene-1,4-dione (CAS 65565-48-2)
- (2-Hydroxy-4,5-dimethylphenyl)(1H-pyrazol-4-yl)methanone (CAS 288844-40-6)
- 5-(2-Chlorophenyl)-N-(2,4-dichlorophenyl)furan-2-carboxamide (CAS 618400-28-5)
- 4-(1-ethyl-1{H}-pyrazol-4-yl)-1-methyl-1{H}-pyrazolo[3,4-{b}]pyridine-3-carboxylic acid (CAS 1354705-96-6)
- 1-Amino-3-(3,5-dimethyl-1h-pyrazol-1-yl)cyclopentane-1-carboxamide (CAS 1528194-63-9)
- N,N',N''-Tri(tert-butoxycarbonyl)spermine (CAS 114459-62-0)
- 2'-Chloro-8'H-spiro[cyclohexane-1,9'-pyrazino[1',2':1,5]pyrrolo[2,3-d]pyrimidine] (CAS 2170791-56-5)
- 2,3,4-Trifluoro-5-formylbenzonitrile (CAS 1538819-14-5)
- Digoxin EP Impurity C (CAS 1672-46-4)
- 79973-42-5 Bis(pentamethylcyclopentadienyl)cobalt(III) hexafluorophosphate Decamethylcobaltocenium hexafluorophosphate (CAS 79973-42-5)
- Semaglutide impurity 33 (CAS CATO-C4X-222633)
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