2,2-Dithiobis(pyridine-N-oxide) CAS 3696-28-4
| CAS No. | 3696-28-4 |
| Molecular Formula | C10H8N2O2S2 |
| Molecular Weight | 252.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,2-Dithiobis(pyridine-N-oxide) (CAS 3696-28-4), molecular formula C10H8N2O2S2 and molecular weight 252.31 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 2,2-Dithiobis(pyridine-N-oxide) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 252.31 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C10H8N2O2S2 |
| Molecular Weight | 252.31 g/mol |
| Purity | >95% |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Dithiobis Standards
- 2,2-Dithiobis(thiazole) (CAS 20362-54-3)
- 3,3'-dithiobis[N-(1-methylethyl)-Propanamide (CAS 543740-32-5)
- 2,2-Dithiobis[2-methyl-1-propanol] (CAS 132182-01-5)
- 2127-10-8 2,2'-Dithiobis(5-nitropyridine) Pyridine, 2,2'-dithiobis(5-nitro- 5-21-02-00066 (Beilstein Handbook Reference) AI3-62509 Bis(5-nitro-2-pyridyl) disulfide BRN 0305413 5,5'-Dinitro-2,2'-dipyridyl disulfide DTNP EINECS 218-344-7 NSC 149336 (CAS 2127-10-8)
- 2,2'-[Dithiobis(methylene)]bis[oxirane] (CAS 86840-27-9)
- 2,2'-dithiobis[N-methylbenzamide] (CAS 2527-58-4)
- 4,4'-Dithiobis[2,5-dihydro-2,2,5,5-tetramethyl-1H-imidazol-1-yloxy] Bis Radical (CAS 123557-49-3)
- Bis[[3,3'-dithiobis[D-valinato]](2-)-N,O]copper (CAS 57596-07-3)
Recommended Standards
- Perylene (CAS 198-55-0)
- Hexazinone (CAS 51235-04-2)
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- Effusol (CAS 73166-28-6)
- Glucoiberin (CAS 554-88-1)
- 3-(Trifluoromethoxy)piperidine (CAS 1274903-50-2)
- 2-Amino-N-(3-ethoxypropyl)-2-methylpropanamidehydrochloride (CAS 1219964-32-5)
- 3-Methyl-1-[2-(methylamino)ethyl]-1,2-dihydroquinoxalin-2-one dihydrochloride (CAS 1432681-03-2)
- tert-Butyl 4-(3-(hydroxymethyl)phenyl)piperazine-1-carboxylate (CAS 261925-88-6)
- 3-Pyrrolidin-1-ylmethyl-piperidine 3-(pyrrolidin-1-ylmethyl)piperidine 3-(1-Pyrrolidinylmethyl)piperidine 514842-98-9 (CAS 514842-98-9)
- 2,6-Dibromo-4,4-dioctyl-4H-cyclopenta[1,2-b:5,4-b']dithiophene (CAS 478404-10-3)
- 4-((2-Bromophenyl)thio)butanoic acid (CAS 938260-58-3)
- Tris(hexafluoroisopropyl) Borate (CAS 6919-80-8)
- Peptide 437 (CAS CATO-CPTD788437)
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