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94371-04-7

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94371-04-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94371-04-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,3,7 and 1 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 94371-04:
(7*9)+(6*4)+(5*3)+(4*7)+(3*1)+(2*0)+(1*4)=137
137 % 10 = 7
So 94371-04-7 is a valid CAS Registry Number.

94371-04-7Relevant articles and documents

Preparation of a Chiral Lactone from Leavoglucosan; a Key Intermediate for Synthesis of the Spiroacetal Moietes of the Avermectins and Milbemycins

Baker, Raymond,Boyes, R. Hugh O.,Broom, D. Mark P.,O'Mahony, Mary J.,Swain, Christopher J.

, p. 1613 - 1622 (2007/10/02)

A synthesis of two diprotected (4S,6S)-4-hydroxy-6-hudroxymethyltetrahydropyran-2-ones has been developed from laevoglucosan.Reaction of these lactones with a substituted chiral lithium acetylide followed by hydrogenation and acid-catalysed cyclisation led to formation of the spiroacetal moiety of milbemycin α1 and α3.The acetylene was prepared by resolution of racemic material obtained from reaction of lithium acetylide and cis-butene epoxide.Alternatively a stereocontrolled synthesis was developed from (S)-methyl-3-hydroxy-2-methylpropionate which involved 'chelation controlled' addition of lithium dimethylcuprate to the corresponding tetrahydropyranyloxy aldehyde.

The Chemistry of Spiroacetals. Preparation of a Chiral Disubstituted Lactone Derivative; a Key Intermediate for Synthesis of the Spiroacetal Moieties of the Avermectins and Milbemycins

Baker, Raymond,Boyes, R. Hugh O.,Broom, D. Mark P.,Devlin, J. Alastair,Swain, Christopher J.

, p. 829 - 831 (2007/10/02)

A synthesis of two diprotected (4S,6S)-4-hydroxy-6-hydroxymethyltetrahydropyran-2-ones has been developed from laevoglucosan; reaction of these lactones with a substituted lithium acetylide derivative followed by hydrogenation and acid catalysed cyclisati

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