136996-42-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136996-42-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,9,9 and 6 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 136996-42:
(8*1)+(7*3)+(6*6)+(5*9)+(4*9)+(3*6)+(2*4)+(1*2)=174
174 % 10 = 4
So 136996-42-4 is a valid CAS Registry Number.