1620388-97-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620388-97-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,3,8 and 8 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1620388-97:
(9*1)+(8*6)+(7*2)+(6*0)+(5*3)+(4*8)+(3*8)+(2*9)+(1*7)=167
167 % 10 = 7
So 1620388-97-7 is a valid CAS Registry Number.