1201643-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1201643-74-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,1,6,4 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1201643-74:
(9*1)+(8*2)+(7*0)+(6*1)+(5*6)+(4*4)+(3*3)+(2*7)+(1*4)=104
104 % 10 = 4
So 1201643-74-4 is a valid CAS Registry Number.