1621612-74-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1621612-74-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,1,6,1 and 2 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1621612-74:
(9*1)+(8*6)+(7*2)+(6*1)+(5*6)+(4*1)+(3*2)+(2*7)+(1*4)=135
135 % 10 = 5
So 1621612-74-5 is a valid CAS Registry Number.