1534-42-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1534-42-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,3 and 4 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1534-42:
(6*1)+(5*5)+(4*3)+(3*4)+(2*4)+(1*2)=65
65 % 10 = 5
So 1534-42-5 is a valid CAS Registry Number.