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42548-90-3

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42548-90-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42548-90-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,4 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 42548-90:
(7*4)+(6*2)+(5*5)+(4*4)+(3*8)+(2*9)+(1*0)=123
123 % 10 = 3
So 42548-90-3 is a valid CAS Registry Number.

42548-90-3Relevant articles and documents

Synthesis of Allylic Alcohols via Palladium-Catalyzed Cross-Coupling of Vinylic Epoxides and Aryl or Vinylic Halides and Triflates

Larock, Richard C.,Ding, Shuji

, p. 804 - 806 (1993)

Palladium acetate in the presence of sodium formate, n-Bu4NCl, and diisopropylethylamine catalyzes the cross-coupling of vinylic epoxides with aryl or vinylic halides and triflates to form allylic alcohols in good yield.

Synthesis and biological activity of permethrinic acid analogs containing various substituents in position 2 of the cyclopropane ring

Mirzabekova,Kuz'mina,Lukashov,Sokolova,Golosov,Kazakov,Perlova,Potapova,Kheinman,Ivanova

experimental part, p. 1139 - 1149 (2009/09/25)

A number of permethrinic acid ethyl ester derivatives having various substituents [Et, Pr, Ph, Ph(CH2) n (n = 1, 2), etc.] in position 2 of the cyclopropane ring were synthesized, and their insecticidal acivity against typhoid flies, rice weevils, and bean aphides, as well as juvenoid activity on flour beetle chrysalises, was studied. The newly synthesized compounds turned out to exhibit weak insecticidal activity against standard insects but pronounced juvenile hormone activity, which differentiates them from permethrinic acid esters.

SYNTHESIS OF ALLYLIC ALCOHOLS VIA ORGANOPALLADIUM ADDITIONS TO UNSATURATED EPOXIDES

Larock, Richard C.,Ilkka, Steven J.

, p. 2211 - 2214 (2007/10/02)

The reaction of aryl- and vinylpalladium compounds with vinylic and allylic epoxides provides an excellent, high yielding, regio- and stereoselective route to functionally substituted allylic alcohols which can be made catalytic in palladium.

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