635678-42-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 635678-42-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,5,6,7 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 635678-42:
(8*6)+(7*3)+(6*5)+(5*6)+(4*7)+(3*8)+(2*4)+(1*2)=191
191 % 10 = 1
So 635678-42-1 is a valid CAS Registry Number.