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3556-78-3

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3556-78-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3556-78-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,5,5 and 6 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 3556-78:
(6*3)+(5*5)+(4*5)+(3*6)+(2*7)+(1*8)=103
103 % 10 = 3
So 3556-78-3 is a valid CAS Registry Number.

3556-78-3Relevant articles and documents

Monocyclic Quinone Structure-Activity Patterns: Synthesis of Catalytic Inhibitors of Topoisomerase II with Potent Antiproliferative Activity

Waugh, Thomas M.,Masters, John,Aliev, Abil E.,Marson, Charles M.

supporting information, p. 114 - 124 (2019/12/11)

The monocyclic 1,4-benzoquinone, HU-331, the direct oxidation product of cannabidiol, inhibits the catalytic activity of topoisomerase II but without inducing DNA strand breaks or generating free radicals, and unlike many fused-ring quinones exhibits minimal cardiotoxicity. Thus, monocyclic quinones have potential as anticancer agents, and investigation of the structural origins of their biological activity is warranted. New syntheses of cannabidiol and (±)-HU-331 are here reported. Integrated synthetic protocols afforded a wide range of polysubstituted resorcinol derivatives; many of the corresponding novel 2-hydroxy-1,4-benzoquinone derivatives are potent inhibitors of the catalytic activity of topoisomerase II, some more so than HU-331, whose monoterpene unit replaced by a 3-cycloalkyl unit conferred increased antiproliferative properties in cell lines with IC50 values extending below 1 mM, and greater stability in solution than HU-331. The principal pharmacophore of quinones related to HU-331 was identified. Selected monocyclic quinones show potential for the development of new anticancer agents.

BORON TRIFLUORIDE ETHERATE ON ALUMINA - A MODIFIED LEWIS ACID REAGENT. AN IMPROVED SYNTHESIS OF CANNABIDIOL.

Baek, Seung-Hwa,Srebnik, Morris,Mechoulam, Raphael

, p. 1083 - 1086 (2007/10/02)

Boron trifluoride etherate on alumina catalyses the condensation of resorcinols and monomethyl resorcinols with several monoterpenoid allylic alcohols: in contrast to paralell reactions with boron trifluoride etherate in solution the products obtained do not undergo further cyclisations.

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