1023992-22-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1023992-22-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,3,9,9 and 2 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1023992-22:
(9*1)+(8*0)+(7*2)+(6*3)+(5*9)+(4*9)+(3*2)+(2*2)+(1*2)=134
134 % 10 = 4
So 1023992-22-4 is a valid CAS Registry Number.