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187335-52-0

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187335-52-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187335-52-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,3,3 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 187335-52:
(8*1)+(7*8)+(6*7)+(5*3)+(4*3)+(3*5)+(2*5)+(1*2)=160
160 % 10 = 0
So 187335-52-0 is a valid CAS Registry Number.

187335-52-0Downstream Products

187335-52-0Relevant articles and documents

Silicon-Mediated Skipped Diene Synthesis. Application to the Melon Fly Pheromone

Wilson, Stephen R.,Zucker, Paul A.

, p. 4682 - 4693 (2007/10/02)

The 1,4-diene unit is a key structural feature of many fatty acid derived natural products including arachidonic acid, several of the leukotrienes, and a variety of insect pheromones.In this paper substituted cyclopropyl>carbinols are demonstrated to cleave redily, upon treatment with acid or upon conversion to the corresponding mesylates, to give mono- and disubstituted 1,4-pentadienes.Stereoselective formation of cis and trans olefins from diastereomeric carbinols has been examined.Control of configuration at the olefin derived from the trimethylsilyl-bearing terminus of the cyclopropane system was found to be only moderate while the olefin derived from the carbinol terminus of the cyclopropane system was produced with high trans stereoselectivity.From these results it is concluded that the cleavage of the cyclopropane ring is neither significantly accelerated by, nor strongly coupled to, cleavage of the carbon-silicon bond.The high stereoselectivity observed for the formation of the trans configuration at the olefin derived from the carbinol terminus has been applied to the synthesis of a constituent of the melon fly pheromone.

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