620591-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 620591-69-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,2,0,5,9 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 620591-69:
(8*6)+(7*2)+(6*0)+(5*5)+(4*9)+(3*1)+(2*6)+(1*9)=147
147 % 10 = 7
So 620591-69-7 is a valid CAS Registry Number.