690631-33-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 690631-33-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,6,3 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 690631-33:
(8*6)+(7*9)+(6*0)+(5*6)+(4*3)+(3*1)+(2*3)+(1*3)=165
165 % 10 = 5
So 690631-33-5 is a valid CAS Registry Number.