3,5,5,8,8-pentaphenyl-5,8-dihydro-8λ5-[1,2]azaphospholo[2,1-b][1,3,5,2]oxadiazaphosphole-6,7-dicarboxylic acid dimethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 72502-67-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,5,0 and 2 respectively; the second part has 2 digits, 6 and 7 respectively. Calculate Digit Verification of CAS Registry Number 72502-67: (7*7)+(6*2)+(5*5)+(4*0)+(3*2)+(2*6)+(1*7)=111 111 % 10 = 1 So 72502-67-1 is a valid CAS Registry Number.
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