Pyrido[4,3-d]pyrimidine-8-carbonitrile,
6-amino-1,2,3,4,4a,5,6,7-octahydro-2,4,5,7-tetraoxo- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 671780-10-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,1,7,8 and 0 respectively; the second part has 2 digits, 1 and 0 respectively. Calculate Digit Verification of CAS Registry Number 671780-10: (8*6)+(7*7)+(6*1)+(5*7)+(4*8)+(3*0)+(2*1)+(1*0)=172 172 % 10 = 2 So 671780-10-2 is a valid CAS Registry Number.