4220-99-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4220-99-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,2 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 4220-99:
(6*4)+(5*2)+(4*2)+(3*0)+(2*9)+(1*9)=69
69 % 10 = 9
So 4220-99-9 is a valid CAS Registry Number.
InChI:InChI=1/C12H16NO9P/c14-9-8(5-21-23(18,19)20)22-11(10(9)15)13-7-4-2-1-3-6(7)12(16)17/h1-4,8-11,13-15H,5H2,(H,16,17)(H2,18,19,20)/t8-,9-,10-,11-/m1/s1