639465-47-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 639465-47-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,9,4,6 and 5 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 639465-47:
(8*6)+(7*3)+(6*9)+(5*4)+(4*6)+(3*5)+(2*4)+(1*7)=197
197 % 10 = 7
So 639465-47-7 is a valid CAS Registry Number.