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1,5-Dihydroxy-3-methylanthraquinone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21891-63-4

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21891-63-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21891-63-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,9 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21891-63:
(7*2)+(6*1)+(5*8)+(4*9)+(3*1)+(2*6)+(1*3)=114
114 % 10 = 4
So 21891-63-4 is a valid CAS Registry Number.

21891-63-4Downstream Products

21891-63-4Relevant academic research and scientific papers

REACTIONS OF KETENE ACETALS-14; THE USE OF SIMPLE MIXED VINYLKETENE ACETALS IN THE ANNULATION OF QUINONES

Savard, Jacques,Brassard, Paul

, p. 3455 - 3464 (2007/10/02)

α,β- and β,γ-unsaturated esters can be converted by strong base and chlorotrimethylsilane to the corresponding mixed vinylketene acetals which are shown to be particularly useful and generally applicable reagents for the regiospecific annulation of halogenoquinones.The reaction proceeds readily with a variety of substrates including benzoquinones.

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