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94956-84-0

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94956-84-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94956-84-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,9,5 and 6 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 94956-84:
(7*9)+(6*4)+(5*9)+(4*5)+(3*6)+(2*8)+(1*4)=190
190 % 10 = 0
So 94956-84-0 is a valid CAS Registry Number.

94956-84-0Relevant articles and documents

Synthesis of 2,6-cis-disubstituted 4-methylenetetrahydropyrans by oxy-Michael addition

Gill, Duncan,Taylor, Nicholas H.,Thomas, Eric J.

experimental part, p. 5034 - 5045 (2011/08/06)

The combination of an 'ene' reaction between a 2-(2-trialkylsilyloxyalkyl) prop-2-enyl(trimethyl)silane and an alk-1-yn-3-one mediated by zinc(II) iodide, and an intramolecular oxy-Michael reaction, provides an efficient synthesis of cis-2,6-disubstituted 4-methylenetetrahydropyrans of interest in the context of a synthesis of bryostatins. The stereoselective formation of (E)-vinylsilanes in the 'ene' reaction is of interest.

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