1243838-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1243838-91-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,3,8,3 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1243838-91:
(9*1)+(8*2)+(7*4)+(6*3)+(5*8)+(4*3)+(3*8)+(2*9)+(1*1)=166
166 % 10 = 6
So 1243838-91-6 is a valid CAS Registry Number.