1608997-54-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1608997-54-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,8,9,9 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1608997-54:
(9*1)+(8*6)+(7*0)+(6*8)+(5*9)+(4*9)+(3*7)+(2*5)+(1*4)=221
221 % 10 = 1
So 1608997-54-1 is a valid CAS Registry Number.