157956-84-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157956-84-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,9,5 and 6 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 157956-84:
(8*1)+(7*5)+(6*7)+(5*9)+(4*5)+(3*6)+(2*8)+(1*4)=188
188 % 10 = 8
So 157956-84-8 is a valid CAS Registry Number.