1231955-78-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1231955-78-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,1,9,5 and 5 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1231955-78:
(9*1)+(8*2)+(7*3)+(6*1)+(5*9)+(4*5)+(3*5)+(2*7)+(1*8)=154
154 % 10 = 4
So 1231955-78-4 is a valid CAS Registry Number.