309946-68-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309946-68-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,9,4 and 6 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 309946-68:
(8*3)+(7*0)+(6*9)+(5*9)+(4*4)+(3*6)+(2*6)+(1*8)=177
177 % 10 = 7
So 309946-68-7 is a valid CAS Registry Number.