1117681-42-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1117681-42-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,1,7,6,8 and 1 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1117681-42:
(9*1)+(8*1)+(7*1)+(6*7)+(5*6)+(4*8)+(3*1)+(2*4)+(1*2)=141
141 % 10 = 1
So 1117681-42-1 is a valid CAS Registry Number.