178751-90-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178751-90-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,7,5 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 178751-90:
(8*1)+(7*7)+(6*8)+(5*7)+(4*5)+(3*1)+(2*9)+(1*0)=181
181 % 10 = 1
So 178751-90-1 is a valid CAS Registry Number.