4-((3,4-Dichlorobenzyl)thio)-5-methoxy-2-phenylpyridazin-3(2H)-one CAS 5509-75-1
| CAS No. | 5509-75-1 |
| Molecular Formula | C18H14Cl2N2O2S |
| Molecular Weight | 393.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-((3,4-Dichlorobenzyl)thio)-5-methoxy-2-phenylpyridazin-3(2H)-one.
4-((3,4-Dichlorobenzyl)thio)-5-methoxy-2-phenylpyridazin-3(2H)-one (CAS 5509-75-1), molecular formula C18H14Cl2N2O2S and molecular weight 393.29 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H14Cl2N2O2S, 4-((3,4-Dichlorobenzyl)thio)-5-methoxy-2-phenylpyridazin-3(2H)-one contains a steroid core, 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 393.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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-((3,4-Dichlorobenzyl)thio)-5-methoxy-2-phenylpyridazin-3(2H)-one 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 | C18H14Cl2N2O2S |
| Molecular Weight | 393.29 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Dichlorobenzyl Standards
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- 3-(2,4-Dichlorobenzyl)-4-hydroxy-1-(3-(methylthio)phenyl)pyridin-2(1H)-one (CAS 672949-08-5)
Recommended Standards
- 3-(4-Allyl-5-thioxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)-1-(2,4-dichlorobenzyl)pyridin-2(1H)-one (CAS 242471-94-9)
- 4-(2-Chlorophenoxy)-2-{[(4-chlorophenyl)methyl]sulfanyl}-5-methoxypyrimidine (CAS 338423-10-2)
- 3-(2,4-Dichloro-5-methoxyphenyl)-2-(prop-2-en-1-ylsulfanyl)-3,4-dihydroquinazolin-4-one (CAS 339015-52-0)
- 4-(4-Chlorophenoxy)-2-{[(4-chlorophenyl)methyl]sulfanyl}-5-methoxypyrimidine (CAS 338423-09-9)
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- Methyl 3-(3,4-dimethylbenzamido)benzo[b]thiophene-2-carboxylate (CAS 477490-45-2)
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