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185249-90-5

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185249-90-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 185249-90-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,5,2,4 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 185249-90:
(8*1)+(7*8)+(6*5)+(5*2)+(4*4)+(3*9)+(2*9)+(1*0)=165
165 % 10 = 5
So 185249-90-5 is a valid CAS Registry Number.

185249-90-5Relevant articles and documents

Convenient syntheses of 3-aryl-3,4-dihydroisocoumarins

Limaye, Rohan A.,Joseph, Augustine R.,Natu, Arun D.,Paradkar, Madhusudan V.

, p. 191 - 194 (2015/06/02)

A convenient method for the synthesis of naturally occurring 3,4-dihydroisocoumarins by judicious use of Friedel-Craft acylation, regioselective formylation and oxidative cyclisation reactions is described. O-methylated analogues of montroumarin and thunb

Benzylic Manganese Halides, Sulfonates, and Phosphates: Preparation, Coupling Reactions, and Applications in Organic Synthesis

Kim, Seung-Hoi,Rieke, Reuben D.

, p. 2322 - 2330 (2007/10/03)

The use of highly active manganese, prepared by the Rieke method, for the direct preparation of benzylic manganese reagents was investigated. The oxidative addition of the highly active manganese (Mn*) to benzylic halides was easily completed under mild conditions. More importantly, benzylic manganese sulfonates and phosphates were prepared by direct oxidative addition of Mn* to the carbon-oxygen bonds of benzylic sulfonates and phosphates. The resulting benzylic manganese reagents were found to undergo cross-coupling reactions with a variety of electrophiles. The majority of these reactions were carried out in the absence of any transition metal catalyst under mild conditions. This approach also provided a facile synthetic route to the preparation of resorcinolic lipids.

Combretastatin Analogs via Hydration of Stilbene Derivatives

Mannila, Erkki,Talvitie, Antti

, p. 1037 - 1040 (2007/10/02)

Hydration of the double bond of some stilbene congeners of Picea abies bark by TiCl4.NaBH4 reagent is described.Five racemic 1,2-diphenylethanol derivatives (9-13), structurally related to (R)-(-)combretastatin , have been obtained and characterize

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