1256544-74-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1256544-74-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,5,4 and 4 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1256544-74:
(9*1)+(8*2)+(7*5)+(6*6)+(5*5)+(4*4)+(3*4)+(2*7)+(1*4)=167
167 % 10 = 7
So 1256544-74-7 is a valid CAS Registry Number.