15974-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 15974-57-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,9,7 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 15974-57:
(7*1)+(6*5)+(5*9)+(4*7)+(3*4)+(2*5)+(1*7)=139
139 % 10 = 9
So 15974-57-9 is a valid CAS Registry Number.