165261-34-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 165261-34-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,5,2,6 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 165261-34:
(8*1)+(7*6)+(6*5)+(5*2)+(4*6)+(3*1)+(2*3)+(1*4)=127
127 % 10 = 7
So 165261-34-7 is a valid CAS Registry Number.
165261-34-7Relevant articles and documents
Process for preparing perylene-3,4-dicarboxylic acid derivatives, the derivatives thus prepared and their use
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, (2008/06/13)
Reacting the industrially readily available perylene-3,4,9,10-tetracarboxylic dianhydride (3) with specific primary amines in the presence of water gives perylene-3,4-dicarboxylic bisimides (2). Their hydrolysis affords the perylene-3,4-dicarboxylic anhyd