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540803-89-2

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540803-89-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 540803-89-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,0,8,0 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 540803-89:
(8*5)+(7*4)+(6*0)+(5*8)+(4*0)+(3*3)+(2*8)+(1*9)=142
142 % 10 = 2
So 540803-89-2 is a valid CAS Registry Number.

540803-89-2Relevant academic research and scientific papers

Synthesis of 2-phenylnaphthalenes through gold-catalyzed dimerization via a highly selective carbon nucleophile pathway

Wang, Sinan,Zhang, Lei,Ding, Xiao,Zhou, Yu,Wang, Jinfang,Jiang, Hualiang,Liu, Hong

experimental part, p. 4514 - 4521 (2011/06/27)

A protocol for the facile synthesis of 2-phenylnaphthalene has been developed. The benzyl carbon acts as a nucleophilic center in the presence of the amide nitrogen and acetate oxygen, affording the selective formation of a naphthalene scaffold through th

Branch-selective synthesis of oxindole and indene scaffolds: Transition metal-controlled intramolecular aryl amidation leading to C3 reverse-prenylated oxindoles

Ignatenko, Vasily A.,Deligonul, Nihal,Viswanathan, Rajesh

supporting information; experimental part, p. 3594 - 3597 (2010/11/04)

In an effort to access biologically important scaffolds, a concise branch-selective synthesis of C3 tertiary oxindoles by Cu(I)-catalyzed aryl amidation and 2,2-dimethyl indene by Pd(0)-catalyzed Heck cyclization has been accomplished from acyclic reverse-prenylated intermediates. Oxindole C3-enolate generation using NaH followed by alkylation in the presence of appropriate electrophiles provides a novel route to quaternary C3 reverse-prenylated oxindoles.

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