749835-80-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 749835-80-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,9,8,3 and 5 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 749835-80:
(8*7)+(7*4)+(6*9)+(5*8)+(4*3)+(3*5)+(2*8)+(1*0)=221
221 % 10 = 1
So 749835-80-1 is a valid CAS Registry Number.