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636992-58-0

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636992-58-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 636992-58-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,6,9,9 and 2 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 636992-58:
(8*6)+(7*3)+(6*6)+(5*9)+(4*9)+(3*2)+(2*5)+(1*8)=210
210 % 10 = 0
So 636992-58-0 is a valid CAS Registry Number.

636992-58-0Downstream Products

636992-58-0Relevant articles and documents

Syntheses of 3-acetoacetylaminobenzo[b]furan derivatives having cysteinyl leukotriene 2 receptor antagonistic activity

Ando, Kumiko,Tsuji, Eriko,Ando, Yuko,Kuwata, Noriko,Kunitomo, Jun-Ichi,Yamashita, Masayuki,Ohta, Shunsaku,Kohno, Shigekatsu,Ohishi, Yoshitaka

, p. 625 - 635 (2007/10/03)

Novel 3-acetoacetylaminobenzo[b]furan derivatives having a modified triene system at the 3-position were synthesized starting with 3-aminobenzo[b]furans. The enol isomers, 3-[(3-hydroxybul-2-enonyl)amino]benzo[b]furans (1), of the 3-acetoacetylaminobenzo[b]furans were obtained as stable isomers owing to formation of a hydrogen bonding between the enol hydroxyl group and the amidocarbonyl group. The planarity of the C-2 substituent through the C-3 side chain suggested the existence of a modified conjugational triene system in the enol compound. Cysteinyl leukotriene 1 and 2 receptor antagonistic activities for these compounds were evaluated. 2-(4-Cyanobenzoyl or ethoxycarbonyl)-3-[(2-cyano-3-hydroxybut-2-enonyl)amino]benzo[e]furans (15g, 15o, 15u) were moderately active.

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