149639-81-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 149639-81-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,6,3 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 149639-81:
(8*1)+(7*4)+(6*9)+(5*6)+(4*3)+(3*9)+(2*8)+(1*1)=176
176 % 10 = 6
So 149639-81-6 is a valid CAS Registry Number.