216576-81-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 216576-81-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,6,5,7 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 216576-81:
(8*2)+(7*1)+(6*6)+(5*5)+(4*7)+(3*6)+(2*8)+(1*1)=147
147 % 10 = 7
So 216576-81-7 is a valid CAS Registry Number.