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159734-07-3

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159734-07-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159734-07-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,7,3 and 4 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 159734-07:
(8*1)+(7*5)+(6*9)+(5*7)+(4*3)+(3*4)+(2*0)+(1*7)=163
163 % 10 = 3
So 159734-07-3 is a valid CAS Registry Number.

159734-07-3Relevant articles and documents

Sequencing cross-metathesis and non-metathesis reactions to rapidly access building blocks for synthesis

Sirasani, Gopal,Paul, Tapas,Andrade, Rodrigo B.

experimental part, p. 2197 - 2205 (2011/04/22)

The olefin cross-metathesis reaction has been sequenced with four common organic transformations in a one- or two-pot manner to rapidly access useful building blocks. Those reactions are: (1) phosphorus-based olefination (e.g., Wittig and Horner-Wadsworth-Emmons); (2) hydride reduction; (3) Evans propionate aldol reaction; (4) Brown allyl- and Roush crotyl-boration. The products of these reactions include stereodefined 2,4-dienoates, trans allylic alcohols, syn-propionate aldols, and chiral non-racemic homoallylic alcohols, respectively. Many of these intermediates have been carried further to natural products, demonstrating the utility of the methodology.

The total synthesis and biological properties of the cytotoxic macrolide FD-891 and its non-natural (Z)-C12 isomer

Garcia-Fortanet, Jorge,Murga, Juan,Carda, Miguel,Marco, J. Alberto,Matesanz, Ruth,Diaz, J. Fernando,Barasoain, Isabel

, p. 5060 - 5074 (2008/02/11)

A total, stereoselective synthesis of the naturally occurring, cytotoxic macrolide FD-891 and of its non-natural (Z)-C12 isomer is described. Three fragments of the main carbon chain were stereoselectively prepared by using asymmetric aldol and allylation reactions as the key steps. The molecule was then assembled by using two Julia-Kocienski olefinations to connect the three fragments and a Yamaguchi reaction to close the macrolactone ring. Some specific biological properties (cytotoxicity, binding to tubulin) have been determined for both macrolides. The E configuration of the C12-C13 olefinic bond seems to be an important feature in determining the cytotoxicity but the precise biological mechanism of the latter still remains to be cleared.

New Odorless Protocols for the Synthesis of Aldehydes and Ketones from Thiol Esters

Miyazaki, Tohru,Han-Ya, Yuki,Tokuyama, Hidetoshi,Fukuyama, Tohru

, p. 477 - 480 (2007/10/03)

Dodecanethiol esters derived from odorless dodecanethiol proved to be suitable substrates for Pd-catalyzed reduction with triethylsilane, coupling with organozinc reagents, and coupling with terminal acetylenes.

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