Diethyl 3,3'-(disulfanediylbis(methylene))bis(5-methyl-1H-pyrazole-4-carboxylate) CAS 296266-49-4
| CAS No. | 296266-49-4 |
| Molecular Formula | C16H22N4O4S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Diethyl 3,3'-(disulfanediylbis(methylene))bis(5-methyl-1H-pyrazole-4-carboxylate) (CAS 296266-49-4), molecular formula C16H22N4O4S2HCl and molecular weight 434.95 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H22N4O4S2HCl, Diethyl 3,3'-(disulfanediylbis(methylene))bis(5-methyl-1H-pyrazole-4-carboxylate) contains a flavonoid 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 434.95 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).
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 | C16H22N4O4S2 HCl |
| Molecular Weight | 434.95 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related Diethyl Standards
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- diethyl 2,2,4,4-tetrafluoro-3-oxopentanedioate (CAS 1001383-52-3)
Recommended Standards
- 6,6'-Dibromo-1,1'-di(n-octyl)isoindigo (CAS 1334295-79-2)
- 1-(1-(Tert-butoxycarbonyl)piperidin-2-yl)-3,3-difluorocyclobutane-1-carboxylic acid (CAS 2172496-20-5)
- methyl (R)-2-(2-((3,3-dibutyl-7-(methylthio)-1,1-dioxido-5-phenyl-2,3,4,5-tetrahydrobenzo[b][1,4]thiazepin-8-yl)oxy)acetamido)-2-phenylacetate (CAS 439088-19-4)
- 1-Benzyl-1,6-diazaspiro[3.4]octane (CAS 1363381-74-1)
- 2,6-Dichloro-N-((2,5-dichlorophenyl)carbamoyl)-4-methylnicotinamide (CAS 286430-79-3)
- Iomeprol Impurity 22 (CAS CATO-C4X-182022)
- 1-(Dimethoxymethyl)-4-methylbenzene (CAS 3395-83-3)
- 2-(4-(Trifluoromethyl)phenyl)thiophene (CAS 115933-15-8)
- (2R,5R)-2-(4-fluorophenyl)-5-methylpyrrolidine (CAS 2162130-29-0)
- Immunstimulating Peptide, human (CAS 94773-24-7)
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