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54758-73-5

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54758-73-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54758-73-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,7,5 and 8 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 54758-73:
(7*5)+(6*4)+(5*7)+(4*5)+(3*8)+(2*7)+(1*3)=155
155 % 10 = 5
So 54758-73-5 is a valid CAS Registry Number.

54758-73-5Upstream product

54758-73-5Relevant articles and documents

Xanthones in heterocyclic synthesis. An efficient route for the synthesis of C-3 o-Hydroxyaryl substituted 1, 2-benzisoxazoles and their N-oxides, potential scaffolds for angiotensin(II) antagonist hybrid peptides

Gardikis, Yiannis,Tsoungas, Petros G.,Potamitis, Constantinos,Zervou, Maria,Cordopatis, Paul

, p. 1077 - 1091 (2011/06/19)

Regioselective substitution of xanthone and its nucleophilic cleavage allow the synthesis of C-3 ohydroxyaryl substituted 1, 2-benzisoxazoles or their V-oxides by cyclodehydration or oxidative cyclization of their corresponding ketoxime precursors, respectively. Molecular modeling analysis and 1H NMR spectra indicate an intramolecular H-bonding engaging phenol OH and the isoxazole ring N atom. The Japan Institute of Heterocyclic Chemistry.

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