1556631-03-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1556631-03-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,5,6,6,3 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1556631-03:
(9*1)+(8*5)+(7*5)+(6*6)+(5*6)+(4*3)+(3*1)+(2*0)+(1*3)=168
168 % 10 = 8
So 1556631-03-8 is a valid CAS Registry Number.