689755-35-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 689755-35-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,9,7,5 and 5 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 689755-35:
(8*6)+(7*8)+(6*9)+(5*7)+(4*5)+(3*5)+(2*3)+(1*5)=239
239 % 10 = 9
So 689755-35-9 is a valid CAS Registry Number.