2-((6-(4-(1H-Pyrazol-1-yl)phenyl)pyridazin-3-yl)thio)-N-(5-methylisoxazol-3-yl)acetamide CAS 1004439-73-9
| CAS No. | 1004439-73-9 |
| Molecular Formula | C19H16N6O2S |
| Molecular Weight | 392.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-((6-(4-(1H-Pyrazol-1-yl)phenyl)pyridazin-3-yl)thio)-N-(5-methylisoxazol-3-yl)acetamide (CAS 1004439-73-9), molecular formula C19H16N6O2S and molecular weight 392.43 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 2-((6-(4-(1H-Pyrazol-1-yl)phenyl)pyridazin-3-yl)thio)-N-(5-methylisoxazol-3-yl)acetamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 392.43 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C19H16N6O2S |
| Molecular Weight | 392.43 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 1 |
Related H Standards
- N-[(6-pyrazol-1-ylpyridin-3-yl)methyl]-4,6-dipyrrolidin-1-yl-1,3,5-triazin-2-amine (CAS 1172698-34-8)
- 1-(6-(1H-Pyrazol-1-yl)pyridazin-3-yl)-N-(3-acetylphenyl)piperidine-4-carboxamide (CAS 1286709-97-4)
- 2-((6-(1H-Pyrazol-1-yl)pyrimidin-4-yl)thio)-N-(2-bromophenyl)acetamide (CAS 1251604-24-6)
- (5-(1H-Pyrazol-4-yl)thiophen-3-yl)((1R,3r,5S)-3-hydroxy-3-(pyrimidin-2-yl)-8-azabicyclo[3.2.1]octan-8-yl)methanone (CAS 1346013-80-6)
- (3-(1H-Pyrazol-1-yl)phenyl)(7-(o-tolyl)-1,4-thiazepan-4-yl)methanone (CAS 1705509-59-6)
- 2-(4-(4-(4-(1H-Pyrazol-4-yl)phenyl)piperidin-4-yl)phenoxy)acetic acid (CAS 857532-03-7)
- 1-(2-(1H-Pyrazol-1-yl)ethyl)-4-((2-ethoxyphenyl)sulfonyl)piperazine (CAS 1396716-51-0)
- 2-((6-(1H-Pyrazol-1-yl)pyridazin-3-yl)thio)-N-(2-chlorobenzyl)acetamide (CAS 1351621-24-3)
Recommended Standards
- Flumetasone Impurity 18 (CAS CATO-C4X-191018)
- (E)-4-Amino-5-fluoro-3-(5-(4-methylpiperazin-1-yl)-1,3-dihydro-2H-benzo[d]imidazol-2-ylidene)quinolin-2(3H)-one (CAS 1027263-12-2)
- Triamcinolone Acetonide Impurity 43 (CAS CATO-C4X-132643)
- (3-Fluorophenyl)(4-(6-(4-methoxyphenyl)pyridazin-3-yl)piperazin-1-yl)methanone (CAS 1040639-38-0)
- 6-(3-(Pyridin-2-yl)-1H-pyrazol-4-yl)quinazolin-4-amine (CAS 746667-28-7)
- 6-Cyclobutoxyhexane-1-sulfonyl chloride (CAS 1343984-35-9)
- (S)-2-amino-2-(3-chloro-4-fluorophenyl)ethan-1-ol (CAS 496856-52-1)
- 4-(4-Nitrophenyl)-3H-1,2,4-triazole-3,5(4H)-dione (CAS 13274-75-4)
- 6-Fluorospiro[3.3]heptan-2-amine (CAS 2715119-77-8)
- Ethyl 2-(6-chloropyridazin-3-yl)-2-fluoroacetate (CAS 1208249-84-6)
- 5-Azaindole (CAS 271-34-1)
- Tenofovir Alafenamide Impurity 6 (CAS CATO-C4X-17976)
- 7-methoxy-2-oxo-2H-1,3-benzoxathiole-5-carbaldehyde (CAS 4991-69-9)
- Tirzepatide Impurity 33 (CAS CATO-C4X-324033)
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