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945406-20-2

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945406-20-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 945406-20-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,5,4,0 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 945406-20:
(8*9)+(7*4)+(6*5)+(5*4)+(4*0)+(3*6)+(2*2)+(1*0)=172
172 % 10 = 2
So 945406-20-2 is a valid CAS Registry Number.

945406-20-2Relevant articles and documents

Expedient synthesis of bisabolenol stink bug pheromones via stereodefined cyclohex-2-enones

Shirali, Shyam,Guzman, Filadelfo,Weber, Donald C.,Khrimian, Ashot

supporting information, p. 2066 - 2068 (2017/05/04)

We recently synthesized all stereoisomers of 1,10-bisaboladien-3-ol and 10,11-epoxy-1-bisabolen-3-ol, including three stink bug pheromones, via a rhodium-catalyzed asymmetric addition of trimethylaluminum to diastereomeric mixtures of cyclohex-2-enones. However, yields of trans isomers were low, and scaling reactions using expensive catalysts were cumbersome. Now we describe a new synthesis of bisabolenol stink bug pheromones via (S)- and (R)-4-((R)-6-methylhept-5-en-2-yl)cyclohex-2-enones prepared by enantioselective Michael additions of methyl vinyl ketone to (S)- and (R)-citronellals and lithium hydroxide monohydrate-catalyzed stereoselective cyclizations of intermediate ketoaldehydes. Addition of methyllithium to these enones provided cis- and trans-1,10-bisaboladien-3-ols, which were separated by chromatography on silica and further converted to 10,11-epoxy-1-bisabolen-3-ols. Thus, we developed more convenient syntheses of pheromones of the rice stink bug, the harlequin bug, and brown marmorated stink bug.

COMPOSITIONS AND METHODS TO ATTRACT THE BROWN MARMORATED STINK BUG (BMSB), HALYOMORPHA HALYS

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Paragraph 0056; 0076;0077; 0078; 0079; 0080; 0081; 0082, (2013/07/05)

A composition (useful for attracting Halyomorpha halys) containing (3R,6R,7R,10S)-10,11-epoxy-1-bisabolen-3-ol, (3R,6R,7R,10R)-10,11-epoxy-1-bisabolen-3-ol, (3S,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol, (3S,6S,7R,10R)-10,11-epoxy-1-bisabolen-3-ol, and optionally a carrier material or carrier. The composition may also contain (3R,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol, (3R,6S,7R,10R)-10,11-epoxy-1-bisabolen-3-ol, (3S,6R,7R,10S)-10,11-epoxy-1-bisabolen-3-ol, (3S,6R,7R,10R)-10,11-epoxy-1-bisabolen-3-ol where the composition contains a 3:1 ratio of cis-epoxybisabolenols : trans-epoxybisabolenols produced from (R)-citronellal. These compositions were based on the newly discovered aggregation pheromone components: (3S,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol and (3R,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol. The composition may also contain methyl (2E,4E,6Z)-decatrieonate. Also a method for attracting Halyomorpha halys to an object or area, involving treating said object or area with a Halyomorpha halys attracting composition containing a Halyomorpha halys attracting effective amount of the composition.

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