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57221-66-6

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57221-66-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57221-66-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,2 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 57221-66:
(7*5)+(6*7)+(5*2)+(4*2)+(3*1)+(2*6)+(1*6)=116
116 % 10 = 6
So 57221-66-6 is a valid CAS Registry Number.

57221-66-6Relevant articles and documents

Design, synthesis, biological evaluation of 3,5-diaryl-4,5-dihydro-1H-pyrazole carbaldehydes as non-purine xanthine oxidase inhibitors: Tracing the anticancer mechanism via xanthine oxidase inhibition

Joshi, Gaurav,Sharma, Manisha,Kalra, Sourav,Gavande, Navnath S.,Singh, Sandeep,Kumar, Raj

, (2021/01/19)

Xanthine oxidase (XO) has been primarily targeted for the development of anti-hyperuriciemic /anti-gout agents as it catalyzes the conversion of xanthine and hypoxanthine into uric acid. XO overexpression in various cancer is very well correlated due to r

Enantioselective Synthesis of Tetrahydroquinolines via One-Pot Cascade Biomimetic Reduction?

Zhao, Zi-Biao,Li, Xiang,Chen, Mu-Wang,Wu, Bo,Zhou, Yong-Gui

supporting information, p. 1691 - 1695 (2020/11/03)

A novel and efficient protocol for the synthesis of chiral tetrahydroquinoline derivatives with excellent enantioselectivities and high yields has been developed through one-pot cascade biomimetic reduction. The detailed reaction pathway includes the acid-catalyzed and ruthenium-catalyzed formation of aromatic quinoline intermediates and biomimetic asymmetric reduction.

Organocatalyzed aerobic oxidative Robinson-type annulation of 2-isocyanochalcones: expedient synthesis of phenanthridines

Hu, Zhongyan,Dong, Jinhuan,Men, Yang,Li, Yifei,Xu, Xianxiu

supporting information, p. 1739 - 1742 (2017/02/10)

A DBU-catalyzed aerobic oxidative Robinson annulation of 2-isocyanochalcones with active methylene ketones was developed for the expedient synthesis of phenanthridines in high to excellent yields. This unprecedented multistep domino reaction represents a

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