121783-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121783-50-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,8 and 3 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 121783-50:
(8*1)+(7*2)+(6*1)+(5*7)+(4*8)+(3*3)+(2*5)+(1*0)=114
114 % 10 = 4
So 121783-50-4 is a valid CAS Registry Number.