4-(Diphenylamino)benzenesulfonic acid CAS 303730-29-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 303730-29-2 |
| Molecular Formula | C18H15NO3S |
| Molecular Weight | 325.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(Diphenylamino)benzenesulfonic acid (CAS 303730-29-2) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C18H15NO3S. Molecular weight: 325.38 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C18H15NO3S |
| Molecular Weight | 325.38 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Diphenylamino Standards
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- Ethyl 2-(diphenylamino)pyrimidine-5-carboxylate (CAS 1316216-05-3)
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Recommended Standards
- 4-(4-Nitrophenyl)-N-phenethylthiazol-2-amine (CAS 406471-61-2)
- 4-(Methanesulfinylmethyl)-6-phenoxy-2-(pyridin-4-yl)pyrimidine (CAS 477711-30-1)
- 4-(4-Fluorophenyl)-3,7,7-trimethyl-2,4,6,7,8,9-hexahydro-5H-pyrazolo[3,4-b]quinolin-5-one (CAS 865658-69-1)
- Potassium acetate hydrate (CAS 254966-93-3)
- Ethyl 1-methylpiperidine-4-carboxylate (CAS 24252-37-7)
- Methyl 3-(3-(4-fluorophenyl)thioureido)-4-methylthiophene-2-carboxylate (CAS 2197054-51-4)
- 5-Bromo-2-(1-methyl-1H-pyrazol-4-yl)pyridine (CAS 1394023-12-1)
- 3-Chloro-5-methyl-2-propoxybenzaldehyde (CAS 883517-89-3)
- 2-(4-Cyclohexylfuran-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2096337-25-4)
- Semaglutide Impurity 137 (x TFA Salt) (CAS CATO-C4X-2226137)
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