998-80-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 998-80-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,9 and 8 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 998-80:
(5*9)+(4*9)+(3*8)+(2*8)+(1*0)=121
121 % 10 = 1
So 998-80-1 is a valid CAS Registry Number.
998-80-1Relevant articles and documents
Convenient one pot synthesis of phosphonites and H-phosphinates
Petnehazy, Imre,Jaszay, Zsuzsa M.,Szabo, Andrea,Everaert, Kinga
, p. 1665 - 1674 (2007/10/03)
A convenient and simple one-pot method is described for the synthesis of phosphonites [RP(OEt)2, 1] and H-phosphinates [HP(O)R(OEt), 2] from triethyl phosphite and appropriate Grignard reagents.