81759-25-3 Usage
Uses
Reactant in the ring-opening polymerization of six-and seven-membered cyclic pseudoureas.
Check Digit Verification of cas no
The CAS Registry Mumber 81759-25-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,5 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81759-25:
(7*8)+(6*1)+(5*7)+(4*5)+(3*9)+(2*2)+(1*5)=153
153 % 10 = 3
So 81759-25-3 is a valid CAS Registry Number.
81759-25-3Relevant articles and documents
OXALSAEUREDERIVATE DURCH OXIDATIVE KUPPLUNG VON KOHLENMONOXID AN NICKEL
Hoberg, Heinz,Fananas, F. Javier,Riegel, Hans Josef
, p. 267 - 272 (2007/10/02)
Carbon monoxide is oxidatively coupled by ligand nickel(II) compounds with secondary, primary amines and with alkali alkoxides to give oxalic acid derivatives.In the case of secondary amines the CO coupling can be run catalytically by adding oxidants like copper(II) salts.The yield of oxalic esters depends on the types of ligands and anions.
