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90331-02-5

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90331-02-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90331-02-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,3,3 and 1 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 90331-02:
(7*9)+(6*0)+(5*3)+(4*3)+(3*1)+(2*0)+(1*2)=95
95 % 10 = 5
So 90331-02-5 is a valid CAS Registry Number.

90331-02-5Relevant articles and documents

Stereoselective synthesis of fluoroalkenoates and fluorinated isoxazolidinones: N-substituents governing the dual reactivity of nitrones

Prakash, G.K. Surya,Zhang, Zhe,Wang, Fang,Rahm, Martin,Ni, Chuanfa,Iuliucci, Marc,Haiges, Ralf,Olah, George A.

supporting information, p. 831 - 838 (2014/01/23)

α-Fluoroalkenoates and 4-fluoro-5-isoxazolidinones are of vast interest due to their potential biological applications. We now demonstrate the syntheses of (E)-α-fluoroalkenoates and 4-fluoro-5-isoxazolidinones by the reactions between nitrones and α-fluoro-α-bromoacetate. By altering N-substituents in nitrones, (E)-α-fluoroalkenoates and 4-fluoro-5-isoxazolidinones can be achieved, respectively, with high chemo- and stereoselectivities. Experimental and computational studies have been conducted to elucidate the reaction mechanisms. Linear free energy relationship studies further revealed that the N-substituent effects are primarily of electronic origin. Copyright

Nitrone derivatives

-

, (2008/06/13)

A compound represented by the figure (1) or a pharmaceutically acceptable salt thereof is useful as medicament for treating retinal degenerative disorders: wherein Ar is optionally substitued phenyl or optionally substituted heteroaryl;. n is 0, 1 or 2; W

1-AZADIENES AS A SYNTHON FOR HETEROCYCLIC SYNTHESIS

Ohshiro, Yoshiki,Komatsu, Mitsuo,Uesaka, Masatoshi,Agawa, Toshio

, p. 549 - 559 (2007/10/02)

1-Azabutadienes 1 were found to be a good building block for three- to five-membered heterocycles having a functional group.Oxidation of 1 with mCPBA afforded 3-alkenyloxaziridines 2.Cycloaddition of 1 with ketenes gave the 4-alkenylazetidinones 6.Addition of a nitrile imine occured across the C=N bond to give the 3-alkenyltriazoline 8, while that of a nitrile ylide occurred on the C=C bond to give the 3-formylpyrrole 14 formed by hydrolysis of the C=N bond.

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