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1250342-36-9

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1250342-36-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1250342-36-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,0,3,4 and 2 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1250342-36:
(9*1)+(8*2)+(7*5)+(6*0)+(5*3)+(4*4)+(3*2)+(2*3)+(1*6)=109
109 % 10 = 9
So 1250342-36-9 is a valid CAS Registry Number.

1250342-36-9Downstream Products

1250342-36-9Relevant articles and documents

Efficient Synthesis of Dimeric Oxazoles, Piperidines and Tetrahydroisoquinolines from N-Substituted 2-Oxazolones

He, Yun,Agarwal, Piyush K.,Kiran, I. N. Chaithanya,Yu, Ruocheng,Cao, Bei,Zou, Cheng,Zhou, Xinghua,Xu, Huacheng,Xu, Biao,Zhu, Lei,Lan, Yu,Nicolaou

supporting information, p. 7696 - 7701 (2016/06/09)

A mild and practical method for the construction of heterocycles from N-substituted 2-oxazolones through cascade, BF3·Et2O/H2O-catalyzed reactions involving iminium ion generation and trapping by external or internal olefinic and aryl moieties is described. Mechanistic and computational studies revealed the strong protic acid HBF4as the initiating catalyst for these cascade reactions. Providing access to novel molecular diversity, these processes may facilitate chemical biology studies, drug discovery efforts and natural products synthesis.

Stereoselective syntheses of four diastereomers of 3,9,12- trihydroxycalamenene via a benzobicyclo[3.3.1] intermediate

Sun, Yongquan,Yu, Binxun,Wang, Xiaolei,Tang, Shibing,She, Xuegong,Pan, Xinfu

supporting information; experimental part, p. 4224 - 4229 (2010/08/22)

The highly stereoselective syntheses of four diastereomers of natural 3,9,12-trihydroxycalamenene are described. The syntheses highlight the utility of an unusual framework of benzobicyclo[3.3.1] lactones, which were accomplished via an intramolecular Friedel-Crafts-type Michael addition of α,β-unsaturated lactones.

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