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53443-94-0

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53443-94-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53443-94-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,4,4 and 3 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 53443-94:
(7*5)+(6*3)+(5*4)+(4*4)+(3*3)+(2*9)+(1*4)=120
120 % 10 = 0
So 53443-94-0 is a valid CAS Registry Number.

53443-94-0Downstream Products

53443-94-0Relevant articles and documents

Zirconocene-mediated highly regio- and stereoselective synthesis of multisubstituted olefins starting from 1-alkynylboronates

Nishihara, Yasushi,Miyasaka, Mitsuru,Okamoto, Masanori,Takahashi, Hideki,Inoue, Eiji,Tanemura, Kenki,Takagi, Kentaro

, p. 12634 - 12635 (2007)

Multisubstituted olefins are efficiently prepared by the zirconocene-mediated regio- and stereoselective coupling between 1-alkynylboronates and ethylene, followed by sequential transformation in moderate to high yields. The proper combination of substrates and reaction conditions is important for high yields. The synthesis of various tetrasubstituted alkenes in a regio- and stereocontrolled manner is described. This methodology has been applied to the synthesis of (Z)-tamoxifen in a concise, regio- and stereoselective manner. This multicomponent coupling strategy involves the characteristics of 1-alkynylboronates toward high selectivities followed by palladium(0)-mediated cross-coupling with aryl halides. Copyright

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