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27957-93-3

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27957-93-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 27957-93-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,9,5 and 7 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 27957-93:
(7*2)+(6*7)+(5*9)+(4*5)+(3*7)+(2*9)+(1*3)=163
163 % 10 = 3
So 27957-93-3 is a valid CAS Registry Number.

27957-93-3Relevant articles and documents

Complete synthesis of the antibiotic anisomycin

Felner,Schenker

, p. 754 - 763 (1970)

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Synthesis of α,ω-Bis-Enones by the Double Addition of Alkenyl Grignard Reagents to Diacid Weinreb Amides

Wiesler, Stefan,Bau, Michael A.,Niepel, Thomas,Younas, Sara L.,Luu, Hieu-Trinh,Streuff, Jan

, p. 6246 - 6260 (2019/09/10)

An efficient double addition of substituted alkenylmagnesium bromides to bis-Weinreb amides has been developed, giving α,ω-bis-enones that are building blocks for certain drugs and polymers. Furthermore, reliable protocols for the preparation of the requi

A compound, catalyst component and catalyst

-

Paragraph 0058; 0059; 0060; 0061; 0062; 0063, (2017/08/25)

The invention discloses a compound with a novel structure. Structural formula of the compound is represented by formula (1), wherein R1, R2, R3, and R4 may be used for representing the same groups or different groups, and are independently selected from s

Enantioselective gold catalysis: Opportunities provided by monodentate phosphoramidite ligands with an acyclic TADDOL backbone

Teller, Henrik,Fluegge, Susanne,Goddard, Richard,Fuerstner, Alois

supporting information; experimental part, p. 1949 - 1953 (2010/06/21)

(Chemical Equation Presented) The tail makes the difference: Removing the isopropylidene acetal unit from well-known TADDOL ligands improved the performance of the derived phosphoramidite ligands in asymmetric gold catalysis (see scheme; Ts=4-toluenesulfonyl). X-ray crystallography showed that the binding pocket has an effective three-fold symmetry, with through-space interactions between the arene rings of the ligand and the gold center.

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