523990-01-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 523990-01-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,2,3,9,9 and 0 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 523990-01:
(8*5)+(7*2)+(6*3)+(5*9)+(4*9)+(3*0)+(2*0)+(1*1)=154
154 % 10 = 4
So 523990-01-4 is a valid CAS Registry Number.