1243634-84-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1243634-84-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,3,6,3 and 4 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1243634-84:
(9*1)+(8*2)+(7*4)+(6*3)+(5*6)+(4*3)+(3*4)+(2*8)+(1*4)=145
145 % 10 = 5
So 1243634-84-5 is a valid CAS Registry Number.