391684-43-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 391684-43-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,9,1,6,8 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 391684-43:
(8*3)+(7*9)+(6*1)+(5*6)+(4*8)+(3*4)+(2*4)+(1*3)=178
178 % 10 = 8
So 391684-43-8 is a valid CAS Registry Number.