63546-88-3 Usage
General Description
2,3-Dihydro-2,3-diphenyl-1,4-phthalazinedione, also known as p-Phthalazinedione or PPD, is a chemical compound with the molecular formula C20H14N2O2. It is a solid, crystalline substance that is insoluble in water but soluble in organic solvents. PPD is often used as a dye intermediate in the production of dyes and pigments. It is also commonly used as a hair dye and in the production of photographic chemicals. PPD has been found to have potential toxic and allergenic effects, and its use in hair dyes has been restricted in some countries. Additionally, exposure to PPD has been associated with allergic reactions and skin sensitization in some individuals.
Check Digit Verification of cas no
The CAS Registry Mumber 63546-88-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,3,5,4 and 6 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 63546-88:
(7*6)+(6*3)+(5*5)+(4*4)+(3*6)+(2*8)+(1*8)=143
143 % 10 = 3
So 63546-88-3 is a valid CAS Registry Number.
InChI:InChI=1/C20H14N2O2/c23-19-17-13-7-8-14-18(17)20(24)22(16-11-5-2-6-12-16)21(19)15-9-3-1-4-10-15/h1-14H
63546-88-3Relevant articles and documents
Electrochemical Conversion of Phthaldianilides to Phthalazin-1,4-diones by Dehydrogenative N?N Bond Formation
Kehl, Anton,Gieshoff, Tile,Schollmeyer, Dieter,Waldvogel, Siegfried R.
, p. 590 - 593 (2017/12/26)
The electrochemical synthesis of 6-membered rings via anodic dianilide N?N coupling is challenging due to concurring benzoxazole co-formation. The rigidity of the a phthalic acid backbone allows a novel access to phthalazin-1,4-diones by N?N bond formation using anodically generated amidyl radicals. Since conventional synthetic routes to phthalazin-1,4-diones require the use of toxic N,N′-diarylhydrazines and generate reagent waste, a safer and more sustainable approach is required. Easy accessible starting materials, a broad scope of applicable functional groups, promising yields, and a very simple set-up elevate this sustainable method.
