1609643-85-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1609643-85-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,9,6,4 and 3 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1609643-85:
(9*1)+(8*6)+(7*0)+(6*9)+(5*6)+(4*4)+(3*3)+(2*8)+(1*5)=187
187 % 10 = 7
So 1609643-85-7 is a valid CAS Registry Number.