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91633-56-6

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91633-56-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91633-56-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,3 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 91633-56:
(7*9)+(6*1)+(5*6)+(4*3)+(3*3)+(2*5)+(1*6)=136
136 % 10 = 6
So 91633-56-6 is a valid CAS Registry Number.

91633-56-6Downstream Products

91633-56-6Relevant articles and documents

Silicon in Organic Synthesis. 24. Preparation and Selected Reactions of Functionalized 1-(Trimethylsilyl)-Substituted Cyclopropanes

Wells, Gregory J.,Yan, Tu-Hsin,Paquette, Leo A.

, p. 3604 - 3609 (2007/10/02)

Several methods for preparing bifunctional 1-(trimethylsilyl)-substituted cyclopropanes are described.The methyl bromide 4, available by Simmons-Smith cyclopropanation of 2 and bromination with phosphorus tribromide, is shown to be highly reactive to SN2 displacement and therefore easily transformed into a variety of other derivatives including the phenyl sulfide, phenyl sulfone, nitrile, and phenyl selenide.Ring-closure protocols have been applied to gain access to the triphenylphosphonium salt, phosphonate ester, and carboxaldehyde (22).The dimethyl acetal 23 ofthis aldehyde gives every indication of being an excellent conjunctive reagent as exemplified by its conversion to 24, 26, and 30.Reactive anions of type A (X = SO2Ph, SPh, SePh, CN) have been generated and in certain cases utilized for additional chemical transformations.

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