1309684-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1309684-56-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,9,6,8 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1309684-56:
(9*1)+(8*3)+(7*0)+(6*9)+(5*6)+(4*8)+(3*4)+(2*5)+(1*6)=177
177 % 10 = 7
So 1309684-56-7 is a valid CAS Registry Number.