1620757-97-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620757-97-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,7,5 and 7 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1620757-97:
(9*1)+(8*6)+(7*2)+(6*0)+(5*7)+(4*5)+(3*7)+(2*9)+(1*7)=172
172 % 10 = 2
So 1620757-97-2 is a valid CAS Registry Number.