1215691-72-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1215691-72-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,5,6,9 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1215691-72:
(9*1)+(8*2)+(7*1)+(6*5)+(5*6)+(4*9)+(3*1)+(2*7)+(1*2)=147
147 % 10 = 7
So 1215691-72-7 is a valid CAS Registry Number.