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1020850-42-3

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1020850-42-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1020850-42-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,0,8,5 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1020850-42:
(9*1)+(8*0)+(7*2)+(6*0)+(5*8)+(4*5)+(3*0)+(2*4)+(1*2)=93
93 % 10 = 3
So 1020850-42-3 is a valid CAS Registry Number.

1020850-42-3Downstream Products

1020850-42-3Relevant articles and documents

The telescoped intramolecular Michael/olefination (TIMO) approach to α-alkylidene-γ-butyrolactones: Synthesis of (+)-paeonilactone B

Edwards, Michael G.,Kenworthy, Martin N.,Kitson, Russell R. A.,Scott, Mark S.,Taylor, Richard J. K.

, p. 1935 - 1937 (2008/12/22)

(Chemical Equation Presented) Scoping out TIMO: A telescoped intramolecular Michael addition/proton transfer/ Horner-Wadsworth-Emmons olefination sequence was developed to provide rapid access to α-alkylidene-γ- butyrolactones (see scheme). The method was applied to prepare a range of tetrahydrobenzofuran-2,5-diones and related systems, and it was utilized in a short synthesis of enantiomerically pure (+)-paeonilactone B.

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