1620977-62-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620977-62-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,9,7 and 7 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1620977-62:
(9*1)+(8*6)+(7*2)+(6*0)+(5*9)+(4*7)+(3*7)+(2*6)+(1*2)=179
179 % 10 = 9
So 1620977-62-9 is a valid CAS Registry Number.