1027434-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1027434-21-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,7,4,3 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1027434-21:
(9*1)+(8*0)+(7*2)+(6*7)+(5*4)+(4*3)+(3*4)+(2*2)+(1*1)=114
114 % 10 = 4
So 1027434-21-4 is a valid CAS Registry Number.