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904688-59-1

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904688-59-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 904688-59-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,4,6,8 and 8 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 904688-59:
(8*9)+(7*0)+(6*4)+(5*6)+(4*8)+(3*8)+(2*5)+(1*9)=201
201 % 10 = 1
So 904688-59-1 is a valid CAS Registry Number.

904688-59-1Relevant articles and documents

Bathocuproine-Enabled Nickel-Catalyzed Selective Ullmann Cross-Coupling of Two sp 2-Hybridized Organohalides

Li, Yuqiang,Yin, Guoyin

supporting information, p. 1657 - 1661 (2021/09/13)

Cross-coupling reactions are essential for the synthesis of complex organic molecules. Here, we report a nickel-catalyzed Ullmann cross-coupling of two sp 2-hybridized organohalides, featuring high cross-selectivity when the two coupling partners are used in a 1:1 ratio. The high chemoselectivity is governed by the bathocuproine ligand. Moreover, the mild reductive reaction conditions allow that a wide range of functional groups are compatible in this Ullmann cross-coupling.

Pd-Catalyzed Suzuki-Miyaura and Hiyama-Denmark Couplings of Aryl Sulfamates

Melvin, Patrick R.,Hazari, Nilay,Beromi, Megan Mohadjer,Shah, Hemali P.,Williams, Michael J.

supporting information, p. 5784 - 5787 (2016/11/29)

Using a recently discovered precatalyst, the first Pd-catalyzed Suzuki-Miyaura reactions using aryl sulfamates that occur at room temperature are reported. In complementary work, it is demonstrated that a related precatalyst can facilitate the coupling of aryl silanolates, which are less toxic and reactive nucleophiles than boronic acids with aryl chlorides. By combining our results using modern electrophiles and nucleophiles, the first Hiyama-Denmark reactions using aryl sulfamates are reported.

Discovery and mechanism study of SIRT1 activators that promote the deacetylation of fluorophore-labeled substrate

Wu, Jiahui,Zhang, Dengyou,Chen, Lei,Li, Jianneng,Wang, Jianling,Ning, Chengqing,Yu, Niefang,Zhao, Fei,Chen, Dongying,Chen, Xiaoyan,Chen, Kaixian,Jiang, Hualiang,Liu, Hong,Liu, Dongxiang

, p. 761 - 780 (2013/04/10)

SIRT1 is an NAD+-dependent deacetylase, whose activators have potential therapeutic applications in age-related diseases. Here we report a new class of SIRT1 activators. The activation is dependent on the fluorophore labeled to the substrate. To elucidate the activation mechanism, we solved the crystal structure of SIRT3/ac-RHKKac-AMC complex. The structure revealed that the fluorophore blocked the H-bond formation and created a cavity between the substrate and the Rossmann fold. We built the SIRT1/ac-RHKK ac-AMC complex model based on the crystal structure. Km and Kd determinations demonstrated that the fluorophore decreased the peptide binding affinity. The binding modes of SIRT1 activators indicated that a portion of the activators interacts with the fluorophore through π-stacking, while the other portion inserts into the cavity or interacts with the Rossmann fold, thus increasing the substrate affinity. Our study provides new insights into the mechanism of SIRT1 activation and may aid the design of novel SIRT1 activators.

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