157643-42-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157643-42-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,6,4 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 157643-42:
(8*1)+(7*5)+(6*7)+(5*6)+(4*4)+(3*3)+(2*4)+(1*2)=150
150 % 10 = 0
So 157643-42-0 is a valid CAS Registry Number.