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39923-62-1

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39923-62-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39923-62-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,9,2 and 3 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 39923-62:
(7*3)+(6*9)+(5*9)+(4*2)+(3*3)+(2*6)+(1*2)=151
151 % 10 = 1
So 39923-62-1 is a valid CAS Registry Number.

39923-62-1Downstream Products

39923-62-1Relevant articles and documents

COMPOUND DIVERSIFICATION USING LATE STAGE FUNCTIONALIZATION

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Paragraph 0102, (2015/12/23)

The present invention relates to methods for generating limited chemical diversity for biologically relevant lead molecules by late state functionalization, separation, and post-functionalization modification. The methods optionally include one or more sc

OXYGEN HETEROCYCLES BY SULPHUR YLIDE ANNULATION. IX. 3,4-DIHYDRO-2-HYDROXYMETHYL-2H,5H-PYRANOBENZOPYRAN-5-ONES FROM 3-(3-OXOALKYL)-4-HYDROXYCOUMARINS AND DIMETHYLSULPHOXONIUM METHYLIDE

Bravo, Pierfrancesco,Resnati, Giuseppe,Ticozzi, Calimero,Arnone, Alberto,Cavicchio, Giancarlo

, p. 501 - 510 (2007/10/02)

Several 3-(3-oxoalkyl)-4-hydroxycoumarins have been synthesized from the corresponding 4-hydroxycoumarins and they have been reacted with dimethylsulphoxonium methylide.Transfer of one methylene group to the carbonyl function takes place and the regio- and site-selective opening of the so formed epoxide by action of the oxygen in position 4 of the coumarin moiety gives 3,4-dihydro-2-hydroxymethyl-2H,5H-pyranobenzopyran-5-ones in medium to high yields.A full spectral characterization of twenty new products has been made, and a discussion on the different factors controlling the reaction mechanism is also reported.

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