52421-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 52421-81-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,4,2 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 52421-81:
(7*5)+(6*2)+(5*4)+(4*2)+(3*1)+(2*8)+(1*1)=95
95 % 10 = 5
So 52421-81-5 is a valid CAS Registry Number.
52421-81-5Relevant articles and documents
Production of dimethylbenzophenone
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, (2008/06/13)
The production of anthraquinone-1-carboxylic acid by reacting a benzoyl halide with a tert.-butylxylene in the presence of ferric chloride, adding aluminum chloride, oxidizing the dimethylbenzophenone formed and cyclizing the resulting benzophenonedicarboxylic acid. The product is a starting material for the production of dyes and pesticides.
