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156603-39-3

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156603-39-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156603-39-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,6,0 and 3 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 156603-39:
(8*1)+(7*5)+(6*6)+(5*6)+(4*0)+(3*3)+(2*3)+(1*9)=133
133 % 10 = 3
So 156603-39-3 is a valid CAS Registry Number.

156603-39-3Downstream Products

156603-39-3Relevant articles and documents

A General Method for the Synthesis of 2-Alkyl Substituted 1,3-Dienes Starting from 2-(Chloromethyl)-3-tosylpropene

Najera, Carmen,Sansano, Jose Miguel

, p. 5829 - 5844 (2007/10/02)

The alkylation of the monolithium derivative 5 of 2-(chloromethyl)-3-tosylpropene (1) with bromo- or iodo-methyltrimethylsilane affords the β-silyl sulfone 7, which after nucleophilic substitution of the chlorine atom followed by β-elimination of tosyltrimethylsilane, promoted by tetrabutylammonium fluoride (TBAF), gives 2-substituted conjugated dienes 6 and the outer-ring diene 14.Racemic ipsenol (10b), an aggregation pheromone of the bark beetle Ips paraconfusus Lanier, is prepared.

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