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158172-41-9

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158172-41-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 158172-41-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,1,7 and 2 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 158172-41:
(8*1)+(7*5)+(6*8)+(5*1)+(4*7)+(3*2)+(2*4)+(1*1)=139
139 % 10 = 9
So 158172-41-9 is a valid CAS Registry Number.

158172-41-9Downstream Products

158172-41-9Relevant articles and documents

Zur Chemie der Silylene: Cycloadditionen von Methoxymethylsilylen mit Heterodienen

Heinicke, Joachim,Gehrhus, Barbara

, p. 13 - 21 (2007/10/02)

Methoxymethylsilylene, generated thermally from 1,2-dimethyltetramethoxydisilane, was reacted with benzil, some benzil monoimines and 1,4-diazabutadienes to furnish in medium to good yields 1,3-dioxa-, 1,3-oxaza- and 1,3-diaza-2-sila-4-cyclopentenes via formal 1,4-cycloadditions.With unsaturated ketones and 1-azabutadienes, respectively, analogously 1-oxa- and 1-aza-2-sila-4-cyclopentenes are obtained.These are, however, accompanied by the 3-en isomers.The heterocycles are thermally very stable but sensitive to hydrolysis and oxidation.They are characterized by NMRdata.

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