121759-69-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121759-69-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,5 and 9 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 121759-69:
(8*1)+(7*2)+(6*1)+(5*7)+(4*5)+(3*9)+(2*6)+(1*9)=131
131 % 10 = 1
So 121759-69-1 is a valid CAS Registry Number.