1022739-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1022739-55-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,2,7,3 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1022739-55:
(9*1)+(8*0)+(7*2)+(6*2)+(5*7)+(4*3)+(3*9)+(2*5)+(1*5)=124
124 % 10 = 4
So 1022739-55-4 is a valid CAS Registry Number.