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6-hydroxy-1,2,3,4-tetrahydrotetraphene-7,12-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

133961-69-0

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133961-69-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133961-69-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,9,6 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 133961-69:
(8*1)+(7*3)+(6*3)+(5*9)+(4*6)+(3*1)+(2*6)+(1*9)=140
140 % 10 = 0
So 133961-69-0 is a valid CAS Registry Number.

133961-69-0Downstream Products

133961-69-0Relevant articles and documents

Studies on Quinones. Part 21. Regioselective Synthesis of Tetracyclic Quinones related to Rabelomycin

Valderrama, Jaime A.,Araya-Maturana, Ramiro,Gonzalez, M. Florencia,Tapia, Ricardo,Farina, Francisco,Paredes, M. Carmen

, p. 555 - 559 (2007/10/02)

The Diels-Alder reaction of the hydroxyquinones 5, 11 and 16 with (E)-1-trimethylsiloxybuta-1,3-diene 3 afforded the corresponding mixture of the regioisomers 6a,b, 12a,b and 17a,b in the ratios 9:1, 8:1 and 11:1, respectively.From these mixtures, the quinones 8, 14 and 19 were obtained by hydrolysis and subsequent oxidation.The preparation of the diene 22 by chlorotrimethylsilylation of the anion of the ester 21 is described.Diels-Alder reaction of diene 22 with the quinones 23 and 24 yielded the corresponding 6-ethoxybenzanthracenequinones 25 and 26, together with the 6-hydroxybenzanthracenequinones 19 and 20.The quinones 10 and 20, which were isolated in mixtures with the ester 21, undergo selective aerial oxidation under basic conditions to give the corresponding benzanthracene-1,7,12-triones 27 and 28.

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