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54502-24-8

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54502-24-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54502-24-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,5,0 and 2 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 54502-24:
(7*5)+(6*4)+(5*5)+(4*0)+(3*2)+(2*2)+(1*4)=98
98 % 10 = 8
So 54502-24-8 is a valid CAS Registry Number.

54502-24-8Upstream product

54502-24-8Relevant articles and documents

SELECTIVE REDUCTION OF ALKYNES TO CIS-ALKENES BY HYDROMETALLATION USING 6

Daeuble, John F.,McGettigan, Colleen,Stryker, Jeffrey M.

, p. 2397 - 2400 (1990)

Selective reduction of alkynes to the corresponding alkenes is reported using the stable, readily prepared copper(I) hydride reagent, 6.Terminal alkynes are reduced at room temperature, unactivated internal alkynes react only at elevated temperature.Disubstituted alkynes with propargyl activation are also reduced, giving cis-olefins selectively.Protection of propargylic alcohol functionality is unnecessary, although fragmentation is sometimes competitive in sterically hindered cases.A tertiary propargyl acetate gave displacement to the allene exclusively.

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