121693-58-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121693-58-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,9 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 121693-58:
(8*1)+(7*2)+(6*1)+(5*6)+(4*9)+(3*3)+(2*5)+(1*8)=121
121 % 10 = 1
So 121693-58-1 is a valid CAS Registry Number.