4-Diazo-4'-methoxydiphenylamine Sulfate CAS 49732-38-9
| CAS No. | 49732-38-9 |
| Molecular Formula | C13H12N3O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 4-Diazo-4'-methoxydiphenylamine Sulfate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 323.32 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.
CATO supplies 4-Diazo-4'-methoxydiphenylamine Sulfate (CAS 49732-38-9), a certified reference material (molecular formula C13H12N3OHO4S, MW 323.32 g/mol) for analytical method development and quality control.
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.
Physical & Chemical Properties
| Molecular Formula | C13H12N3O HO4S |
| Molecular Weight | 323.32 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 4-Cyclopropoxy-3-fluoro-N,N-dimethylbenzamide (CAS 1243397-34-3)
- 2-(4-Piperidinyl)ethyl 2-chloroacetate hydrochloride (CAS 1220031-70-8)
- Methyl 2-((tert-butoxycarbonyl)(2-oxoethyl)amino)acetate (CAS 175211-73-1)
- [(2-Chloro-6-fluorophenyl)methyl](2-methylpropyl)amine (CAS 869945-17-5)
- N-((1-Ethyl-5-fluoro-3-methyl-1H-pyrazol-4-yl)methyl)-1-methyl-1H-pyrazol-3-amine hydrochloride (CAS 1855939-36-4)
- 2,4-Dibromo-1-chlorobenzene (CAS 29604-75-9)
- 4-Iodo-1H-pyrazol-1-ol (CAS 87844-46-0)
- Lasmiditan Impurity 56 (CAS CATO-C4X-247856)
- 3-(tert-Butoxycarbonyl)-3-azabicyclo[4.1.0]heptane-4-carboxylic acid (CAS 1417743-37-3)
- Semaglutide impurity 236 (CAS CATO-C4X-2226236)
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