193689-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 193689-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,3,6,8 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 193689-83:
(8*1)+(7*9)+(6*3)+(5*6)+(4*8)+(3*9)+(2*8)+(1*3)=197
197 % 10 = 7
So 193689-83-7 is a valid CAS Registry Number.