123844-09-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123844-09-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,8,4 and 4 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 123844-09:
(8*1)+(7*2)+(6*3)+(5*8)+(4*4)+(3*4)+(2*0)+(1*9)=117
117 % 10 = 7
So 123844-09-7 is a valid CAS Registry Number.