27818-21-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 27818-21-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,8,1 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 27818-21:
(7*2)+(6*7)+(5*8)+(4*1)+(3*8)+(2*2)+(1*1)=129
129 % 10 = 9
So 27818-21-9 is a valid CAS Registry Number.
InChI:InChI=1/C8H8Cl2N4O.ClH/c9-6-2-1-3-7(10)5(6)4-12-13-8(11)14-15;/h1-4,15H,(H3,11,13,14);1H/b12-4+;