188779-49-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188779-49-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,7,7 and 9 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 188779-49:
(8*1)+(7*8)+(6*8)+(5*7)+(4*7)+(3*9)+(2*4)+(1*9)=219
219 % 10 = 9
So 188779-49-9 is a valid CAS Registry Number.