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121789-21-7

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121789-21-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121789-21-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,8 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 121789-21:
(8*1)+(7*2)+(6*1)+(5*7)+(4*8)+(3*9)+(2*2)+(1*1)=127
127 % 10 = 7
So 121789-21-7 is a valid CAS Registry Number.

121789-21-7Relevant articles and documents

Experimental and theoretical study of Hoveyda-Grubbs catalysts modified by perfluorohexyl ponytail in the alkoxybenzylidene ligand

Kví?ala, Jaroslav,Schindler, Martin,Kelbichová, Vendula,Babuněk, Mario,Rybá?ková, Markéta,Kví?alová, Magdalena,Cva?ka, Josef,B?ezinová, Anna

, p. 12 - 25 (2013)

The alkoxybenzylidene ligand of Hoveyda-Grubbs 1st and 2nd generation catalysts was modified with one or two perfluorohexyl groups by Ullmann reaction with the aim to improve both the fluorophilicity and activity of the catalyst. While bis(perfluorohexyla

Regioselective Iodine/Zinc Exchange for the Selective Functionalization of Polyiodinated Arenes and Heterocycles in Toluene

Sanchez, Florian,Desaintjean, Alexandre,Danton, Fanny,Knochel, Paul

, p. 4662 - 4671 (2021/09/06)

Regioselective I/Zn-exchange reactions were performed on polyiodinated arenes or heterocycles within 20 minutes at 0-25 °C using the bimetallic combination pTol2Zn2LiOR [R = (CH2)2N(Me)(CH2)2NMe2] in toluene. The resulting diaryl- or diheteroarylzincs reacted well with allylic bromides and acyl chlorides to provide functionalized (hetero)- aryl iodides in good yields.

Halogen Bonding Increases the Potency and Isozyme Selectivity of Protein Arginine Deiminase 1 Inhibitors

Mondal, Santanu,Gong, Xuefeng,Zhang, Xiaoqian,Salinger, Ari J.,Zheng, Li,Sen, Sudeshna,Weerapana, Eranthie,Zhang, Xuesen,Thompson, Paul R.

supporting information, p. 12476 - 12480 (2019/08/07)

Protein arginine deiminases (PADs) hydrolyze the side chain of arginine to form citrulline. Aberrant PAD activity is associated with rheumatoid arthritis, multiple sclerosis, lupus, and certain cancers. These pathologies established the PADs as therapeutic targets and multiple PAD inhibitors are known. Herein, we describe the first highly potent PAD1-selective inhibitors (1 and 19). Detailed structure–activity relationships indicate that their potency and selectivity is due to the formation of a halogen bond with PAD1. Importantly, these inhibitors inhibit histone H3 citrullination in HEK293TPAD1 cells and mouse zygotes with excellent potency. Based on this scaffold, we also developed a PAD1-selective activity-based probe that shows remarkable cellular efficacy and proteome selectivity. Based on their potency and selectivity we expect that 1 and 19 will be widely used chemical tools to understand PAD1 biology.

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