20148-17-8 Usage
General Description
2,3-Dihydro-2-hydroxy-1H-isophosphindoline 2-oxide, also known as isophosphindoline oxide, is a chemical compound with the molecular formula C9H11NO2P. It belongs to the class of organic compounds known as phosphindolines, which are bicyclic compounds containing a phosphinine, an indole, and a benzene ring. 2,3-Dihydro-2-hydroxy-1H-isophosphindoline 2-oxide is a heterocyclic parent structure of isophosphindoline and is commonly used as a reagent in organic synthesis. It acts as an efficient catalyst in various organic reactions and is widely used in the pharmaceutical industry for the synthesis of important drug intermediates. Isophosphindoline oxide is a pale yellow crystalline solid that is stable under normal conditions and is generally considered to be non-toxic.
Check Digit Verification of cas no
The CAS Registry Mumber 20148-17-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,1,4 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 20148-17:
(7*2)+(6*0)+(5*1)+(4*4)+(3*8)+(2*1)+(1*7)=68
68 % 10 = 8
So 20148-17-8 is a valid CAS Registry Number.
20148-17-8Relevant articles and documents
Facile synthesis of phosphorus-containing heterocycles
Boyd, E. Andrew,Boyd, Mark E. K.,Kerrigan, Frank
, p. 5425 - 5426 (1996)
2-Hydroxyisophosphindoline-2-oxide 4 and the previously unreported 2-hydroxy-2,3-dihydrophosphaphenalene-2-oxide 5 have been prepared in a one-pot reaction under mild conditions.
SYNTHESIS OF ACYCLIC AND CYLIC DIALKYLPHOSPHINIC ACIDS FROM AMMONIUM HYPOPHOSPHITE
Kurdyumova, N. R.,Ragulin, V. V.,Tsvetkov, E. N.
, p. 380 - 383 (2007/10/02)
The possibilities of synthesizing dialkylphosphinic and cyclic phosphinic acids from ammonium hypophosphite, hexamethyldisilazane, and corresponding halogen derivatives have been studied.These acids can be prepared in low yield, but the simplicity of the process compensates for this disadvantage.
