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18028-09-6

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18028-09-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18028-09-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,0,2 and 8 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 18028-09:
(7*1)+(6*8)+(5*0)+(4*2)+(3*8)+(2*0)+(1*9)=96
96 % 10 = 6
So 18028-09-6 is a valid CAS Registry Number.

18028-09-6Relevant articles and documents

Roberts,Regan

, p. 4102 (1953)

A flow microreactor system enables organolithium reactions without protecting alkoxycarbonyl groups

Nagaki, Aiichiro,Kim, Heejin,Moriwaki, Yuya,Matsuo, Chika,Yoshida, Jun-Ichi

supporting information; experimental part, p. 11167 - 11177 (2010/11/04)

A flow microreactor system consisting of micromixers and microtube reactors provides an effective tool for the generation and reactions of aryllithiums bearing an alkoxycarbonyl group at para-, meta-, and ortho-positions. Alkyl p- and m-lithiobenzoates were generated by the I/Li exchange reaction with PhLi. The Br/Li exchange reactions with sBuLi were unsuccessful. Subsequent reactions of the resulting aryllithiums with electrophiles gave the desired products in good yields. On the other hand, alkyl o-lithiobenzoates were successfully generated by the Br/ Li exchange reaction with sBuLi. Subsequent reactions with electrophiles gave the desired products in good yields.

Diphenylphosphinophenolate: A ligand for the palladium-catalysed silylation of aryl halides activating simultaneously both palladium and silicon

Shirakawa,Kurahashi,Yoshida,Hiyama

, p. 1895 - 1896 (2007/10/03)

Diphenylphosphinophenolate was found to be an effective ligand for the palladium-catalysed silylation of aryl halides, activating not only palladium but also silicon of a disilane, where aryl bromides and iodides having such substituents as methyl, methoxy, amino, ethoxycarbonyl, trifluoromethyl, formyl or phenyl are applicable to the reaction with hexamethyldisilane to give the corresponding trimethylsilylarenes.

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