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41628-68-6

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41628-68-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 41628-68-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,1,6,2 and 8 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 41628-68:
(7*4)+(6*1)+(5*6)+(4*2)+(3*8)+(2*6)+(1*8)=116
116 % 10 = 6
So 41628-68-6 is a valid CAS Registry Number.

41628-68-6Downstream Products

41628-68-6Relevant articles and documents

Regioselective synthesis of 6-alkyl- and 6-prenylpolyhydroxyisoflavones and 6-alkylcoumaronochromone derivatives

Tsukayama, Masao,Wada, Hironari,Kawamura, Yasuhiko,Yamashita, Kazuyo,Nishiuchi, Masaki

, p. 1285 - 1289 (2007/10/03)

The palladium-catalyzed coupling reaction of 6-iodoisoflavone, prepared from 3′-iodoacetophenone derivative, with 2-methyl-3-butyn-2-ol gave 6-alkynylisoflavone derivative, which was hydrogenated to give 6-alkylhydroxyisoflavone (luteone hydrate) (2). Dehydration of 2 gave 2′,4′,5,7-tetrahydroxy-6-prenylisoflavone (luteone) (1). Wighteone hydrate (3) was also synthesized from 6-iodotris(benzyloxy)isoflavone in a similar manner. 6-Alkyl-4′5,7-trihydroxy-coumaronochromone (4) was synthesized by oxidative cyclization of 2 with o-chloranil.

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