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91962-53-7

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91962-53-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91962-53-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,6 and 2 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91962-53:
(7*9)+(6*1)+(5*9)+(4*6)+(3*2)+(2*5)+(1*3)=157
157 % 10 = 7
So 91962-53-7 is a valid CAS Registry Number.

91962-53-7Relevant articles and documents

New Functionalized Horner-Wadsworth-Emmons Reagents: Useful Building Blocks in the Synthesis of Polyunsaturated Aldehydes. A Short Synthesis of (+/-)-(E,E)-Coriolic Acid

Kann, Nina,Rein, Tobias,Akermark, Bjoern,Helquist, Paul

, p. 5312 - 5323 (2007/10/02)

The new Horner-Wadsworth-Emmons reagents 4 and 5 transform carbonyl compounds into 2,4-pentadienals and 3-methyl-2,4-pentadienals, respectively.Reagent 4 gives good yields of the desired products with a variety of aldehydes and ketones; reagent 5 generally gives good yields with aldehydes, but gives lower yields with ketones.The reactions proceed under mild conditions and give the products as predominantly 2E,4E isomers, with moderate to good stereoselectivity.In general, pure samples of the 2E,4E-dienals can be obtained after chromatography.Reagents 4 have been used in the key step in a short synthesis of (+/-)-13-hydroxy-9(E),11(E)-octadecanoic acid ((E,E)-coriolic aicd, 45).

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