21088-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21088-69-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,8 and 8 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21088-69:
(7*2)+(6*1)+(5*0)+(4*8)+(3*8)+(2*6)+(1*9)=97
97 % 10 = 7
So 21088-69-7 is a valid CAS Registry Number.