3,5-Diphenyl-1-(p-tolyl)formazan CAS 13412-07-2
| CAS No. | 13412-07-2 |
| Molecular Formula | C20H18N4 |
| Molecular Weight | 314.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3,5-Diphenyl-1-(p-tolyl)formazan meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
3,5-Diphenyl-1-(p-tolyl)formazan (CAS 13412-07-2), molecular formula C20H18N4 and molecular weight 314.38 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3,5-Diphenyl-1-(p-tolyl)formazan (C20H18N4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 314.38 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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 | C20H18N4 |
| Molecular Weight | 314.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Nitrogen Atoms | 4 |
Related Diphenyl Standards
- 1,5-Diphenyl-3-(p-tolyl)formazan (CAS 1622-12-4)
- 2,6-Diphenyl-7-propylimidazo[1,2-b][1,2,4]triazine (CAS 90217-98-4)
- 3,5-Diphenyl-1-(m-tolyl)formazan (CAS 71274-65-2)
- 3,5-Diphenyl-1-(o-tolyl)formazan (CAS 83809-73-8)
- 1,4-Diphenyl-5,6,7,8,9,10-hexahydrocycloocta[d]pyridazine (CAS 68629-76-5)
- 3,4-Diphenyl-1-(trifluoromethoxy)benzene (CAS 2121515-35-1)
- Diphenyl(3,3,3-trifluoro-2-hydroxypropyl)phosphine oxide (CAS 123271-28-3)
- 4,7-Diphenyl-3H-imidazo[4,5-c]pyridine-6-carboxylic acid (CAS 857048-01-2)
Recommended Standards
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- 2-(((Cyanomethyl)amino)methyl)benzonitrile (CAS 1263281-47-5)
- [Bis(2,4,6-trimethylphenyl)silylene]bis(tricyclohexylphosphine)platinum (CAS 215666-30-1)
- methyl 1-[(3,4-dichlorophenyl)carbonyl]piperidine-4-carboxylate (CAS 349616-92-8)
- 2-(3-Ethyl-2,4-dioxothiazolidin-5-yl)acetic acid (CAS 499199-10-9)
- Methyl 5-amino-4-chloro-2-iodobenzoate (CAS 1260791-40-9)
- 3,6-Difluoro-2-hydroxybenzoic acid (CAS 749230-37-3)
- (3-(Aminomethyl)phenyl)(imino)(methyl)-l6-sulfanone (dihydrochloride) (CAS 2408970-14-7)
- 4,4'-(P-tolylmethylene)bis(N,N-diethyl-3-methylaniline) (CAS 70895-80-6)
- Semaglutide impurity 255 (CAS CATO-C4X-2226255)
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