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251901-68-5

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251901-68-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 251901-68-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,9,0 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 251901-68:
(8*2)+(7*5)+(6*1)+(5*9)+(4*0)+(3*1)+(2*6)+(1*8)=125
125 % 10 = 5
So 251901-68-5 is a valid CAS Registry Number.

251901-68-5Relevant articles and documents

Synthesis and In Vitro Antifungal Evaluation of 1,3,5-Trisubstituted-2-Pyrazoline Derivatives

Deng, Hui,Yu, Zhi-Yi,Shi, Guan-Ying,Chen, Ming-Jing,Tao, Ke,Hou, Tai-Ping

, p. 279 - 289 (2012)

Pyrazolines, the well-known five-membered nitrogen-containing heterocyclic compounds, have received considerable interests in the fields of medicinal and agricultural chemistry because of their broad spectrum of biological activities. To discover more pot

Tandem Cyclization?Annulation of α-Acidic Isocyanides with 2-Methyleneaminochalcones: Synthesis of Pyrrolo[2,3-c]quinoline Derivatives

Dong, Jinhuan,Wang, Xin,Shi, Hui,Wang, Lei,Hu, Zhongyan,Li, Yifei,Xu, Xianxiu

supporting information, p. 863 - 867 (2019/01/04)

Tandem cyclization-annulation of tosylmethyl isocyanide and isocyanoacetate with 2-methyleneaminochalcones as aza-1,5-dielectrophiles has been successfully developed. These domino transformations feature simultaneous formation of three bonds and two rings

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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