1621435-15-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1621435-15-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,1,4,3 and 5 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1621435-15:
(9*1)+(8*6)+(7*2)+(6*1)+(5*4)+(4*3)+(3*5)+(2*1)+(1*5)=131
131 % 10 = 1
So 1621435-15-1 is a valid CAS Registry Number.