Cas 255901-01-0,1,4-Naphthalenedione, 2-(4-nitrobenzoyl)-3-phenyl-

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Check Digit Verification of cas no

The CAS Registry Mumber 255901-01-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,5,9,0 and 1 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 255901-01:
(8*2)+(7*5)+(6*5)+(5*9)+(4*0)+(3*1)+(2*0)+(1*1)=130
130 % 10 = 0
So 255901-01-0 is a valid CAS Registry Number.

255901-01-0Upstream product

1338235-54-3 (E)-3-(4-nitrophenyl)-1-(2-(phenylethynyl)phenyl)prop-2-en-1-one

255901-01-0Downstream Products

255901-01-0Relevant academic research and scientific papers

Copper-catalyzed intramolecular oxidative 6-exo-trig cyclization of 1,6-enynes with H2O and O2

Wang, Zhi-Qiang,Zhang, Wen-Wu,Gong, Lu-Bin,Tang, Ri-Yuan,Yang, Xu-Heng,Liu, Yu,Li, Jin-Heng

, p. 8968 - 8973 (2011)

The novel CuCl2-catalyzed title reaction of enynes has been developed for synthesizing substituted naphthoquinones (see scheme; DMA=dimethylacetamide). The method represents the first example of a copper-catalyzed enyne oxidative cyclization for constructing 1,4-naphthoquinones by the incorporation of two oxygen atoms into the organic framework from molecular oxygen and water.

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