1620523-70-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620523-70-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,5,2 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1620523-70:
(9*1)+(8*6)+(7*2)+(6*0)+(5*5)+(4*2)+(3*3)+(2*7)+(1*0)=127
127 % 10 = 7
So 1620523-70-7 is a valid CAS Registry Number.