| CAS No. | 939761-42-9 |
| Molecular Formula | C13H9Cl2N3O2S |
| Molecular Weight | 342.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (Z)-1-(3,4-dichlorophenyl)-2-(hydroxyimino)-2-(2-(methylthio)pyrimidin-4-yl)ethan-1-one.
CATO supplies (Z)-1-(3,4-dichlorophenyl)-2-(hydroxyimino)-2-(2-(methylthio)pyrimidin-4-yl)ethan-1-one (CAS 939761-42-9), a certified reference material (molecular formula C13H9Cl2N3O2S, MW 342.20 g/mol) for analytical method development and quality control.
Based on its molecular formula C13H9Cl2N3O2S, (Z)-1-(3,4-dichlorophenyl)-2-(hydroxyimino)-2-(2-(methylthio)pyrimidin-4-yl)ethan-1-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 342.20 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.
| Molecular Formula | C13H9Cl2N3O2S |
| Molecular Weight | 342.20 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |