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54280-91-0

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54280-91-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54280-91-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,2,8 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 54280-91:
(7*5)+(6*4)+(5*2)+(4*8)+(3*0)+(2*9)+(1*1)=120
120 % 10 = 0
So 54280-91-0 is a valid CAS Registry Number.

54280-91-0Relevant articles and documents

Metal chloride-promoted aldol reaction of α-dimethylsilylesters with aldehydes, ketones, and α-enones

Miura, Katsukiyo,Nakagawa, Takahiro,Hosomi, Akira

, p. 1917 - 1921 (2005)

In the presence of a catalytic amount of LiCl, α-dimethylsilylesters (α-DMS-esters) 1 smoothly reacted with various aldehydes at 30°C to give aldols in good to high yields. On the other hand, the aldol reaction with ketones was effectively promoted by MgCl2 rather than by LiCl. α-Enones also underwent the metal chloride-promoted addition of 1 at the carbonyl carbon or β-carbon. Georg Thieme Verlag Stuttgart.

Lithium Benzenetellurolate-induced Reformatsky-type Reaction in the Presence of Cerium Trichloride

Fukuzawa, Shin-ichi,Hirai, Katsuhiko

, p. 1963 - 1966 (2007/10/02)

Reformatsky-type reactions with PhTeLi in the presence of CeCl3 proceeded smoothly under mild conditions.The PhTeLi-CeCl3 reagent was particularly efficient for the reactions of sterically hindered and enolizable ketones; in the absence of CeCl3 unsatisfactory yields of the desired β-hydroxy ketone were obtained.It is assumed that CeCl3 reactions involve a cerium enolate intermediate.The stereoselectivity of the reaction between ethyl 2-bromopropionate and benzaldehyde is also described.

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