157207-53-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157207-53-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,2,0 and 7 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 157207-53:
(8*1)+(7*5)+(6*7)+(5*2)+(4*0)+(3*7)+(2*5)+(1*3)=129
129 % 10 = 9
So 157207-53-9 is a valid CAS Registry Number.