229639-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 229639-21-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,9,6,3 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 229639-21:
(8*2)+(7*2)+(6*9)+(5*6)+(4*3)+(3*9)+(2*2)+(1*1)=158
158 % 10 = 8
So 229639-21-8 is a valid CAS Registry Number.