Cas 80173-89-3,2-(3-Chloro-phenyl)-2-hydroxy-5-oxo-2,5-dihydro-pyrrole-1-carboxylic acid benzyl ester

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Check Digit Verification of cas no

The CAS Registry Mumber 80173-89-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,1,7 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 80173-89:
(7*8)+(6*0)+(5*1)+(4*7)+(3*3)+(2*8)+(1*9)=123
123 % 10 = 3
So 80173-89-3 is a valid CAS Registry Number.

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80173-89-3Relevant academic research and scientific papers

Ring Transformation of 2-Furylcarbamates to 5-Hydroxy-3-pyrrolin-2-ones. Effects of Substitution in the Benzene Ring on the N-Carbobenzyloxy-5-hydroxy-5-phenyl-3-pyrroline-2-one -- cis-γ-Ketoamide Equilibrium

Yakushijin, Kenichi,Kozuka, Masamichi,Morishita, Takayuki,Furukawa, Hiroshi

, p. 2420 - 2430 (2007/10/02)

In the ring transformation of 2-furylcarbamates (2) to 5-hydroxy-3-pyrrolin-2-ones (3) by irradiation in the presence of oxygen, there is an equilibrium between N-carbobenzyloxy-5-hydroxy-5-phenyl-3-pyrrolin-2-one (3-A) and cis-γ-ketoamide (3-B); this equ

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