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57712-81-9

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57712-81-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57712-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,1 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 57712-81:
(7*5)+(6*7)+(5*7)+(4*1)+(3*2)+(2*8)+(1*1)=139
139 % 10 = 9
So 57712-81-9 is a valid CAS Registry Number.

57712-81-9Relevant articles and documents

Synthesis, biological active molecular design, and molecular docking study of novel deazaflavin-cholestane hybrid compounds

Shrestha, Ajaya R.,Shindo, Takashi,Ashida, Noriyuki,Nagamatsu, Tomohisa

body text, p. 8685 - 8696 (2009/04/11)

Novel deazaflavin-cholestane hybrid compounds, 3′,8′-disubstituted-5′-deazacholest-2,4-dieno[2,3-g]pteridine-2′,4′(3′H,8′H)-diones, have been synthesized by condensation reaction between 6-(monosubstituted amino)-pyrimidin-2,4(1H,3H)-diones and 2-hydroxymethylenecholest-4-en-3-one in presence of p-toluenesulfonic acid monohydrate and diphenyl ether. The antitumor activities against human tumor cell lines (CCRF-HSB-2 and KB cells) have been investigated in vitro, and many of these compounds showed promising antitumor activities. Furthermore, molecular docking study using LigandFit within the software package Discovery Studio 1.7 was done for lead optimization of these compounds as potential PTK inhibitors. In general, all of the synthesized steroid-hybrid compounds showed good binding affinities into PTK (PDB code: 1t46).

Flavin Activation by Intramolecular Acid Catalysis at N(1) Position

Shinkai, Seiji,Kawanabe, Sayuri,Kawase, Akito,Yamaguchi, Toshiro,Manabe, Osamu,et al.

, p. 2095 - 2102 (2007/10/02)

In order to assess the effect of intramolecular acid catalysis on the specific flavin reactivities, 3-methyl-10-(2-hydroxylphenyl)isoalloxazine (1(2OH)) and 3-methyl-10-(2-hydroxy-1-naphthyl)isoalloxazine (2(2OH)) were synthesized and the redox properties

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