6-Amino-4-(3,5-dichloro-2-methoxyphenyl)-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile CAS 332177-04-5
| CAS No. | 332177-04-5 |
| Molecular Formula | C15H12Cl2N4O2 |
| Molecular Weight | 351.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6-Amino-4-(3,5-dichloro-2-methoxyphenyl)-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (CAS 332177-04-5), molecular formula C15H12Cl2N4O2 and molecular weight 351.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H12Cl2N4O2, 6-Amino-4-(3,5-dichloro-2-methoxyphenyl)-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile 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 351.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C15H12Cl2N4O2 |
| Molecular Weight | 351.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
- 4-[2-(3-bromophenoxy)ethoxy]-3-methoxybenzaldehyde (CAS 568553-39-9)
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- N-(3-Cyano-4-methoxy-2-pyridinyl)-N-[(2,3-dichlorobenzyl)oxy]iminoformamide (CAS 339102-53-3)
- (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,3,4-trimethoxyphenyl)butanoic acid (CAS 1260616-65-6)
- 2-Cyclopropoxy-N-methyl-4-sulfamoylbenzamide (CAS 1243282-62-3)
- 4-(aminomethyl)naphthalen-1-ol hydrochloride (CAS 2060061-95-0)
- ethyl 5-methylpyridazine-4-carboxylate (CAS 92929-53-8)
- tert-Butyl 4-(((4-chlorophenyl)thio)methyl)piperidine-1-carboxylate (CAS 1289387-54-7)
- Methyl 7-(trifluoromethyl)-1H-indole-2-carboxylate (CAS 1362860-90-9)
- 1-ethynyl-1-methylcyclopentane (CAS 28509-11-7)
- 4-(3,5,5-Triphenyl-4,5-dihydro-1H-pyrazol-1-yl)benzaldehyde (CAS 88405-42-9)
- 1-Benzyl-5-oxopyrrolidine-3-carboxamide (CAS 116041-19-1)
- Mast Cell Degranulating Peptide HR-1 (CAS 80533-94-4)
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