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227959-99-1

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227959-99-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 227959-99-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,7,9,5 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 227959-99:
(8*2)+(7*2)+(6*7)+(5*9)+(4*5)+(3*9)+(2*9)+(1*9)=191
191 % 10 = 1
So 227959-99-1 is a valid CAS Registry Number.

227959-99-1Relevant articles and documents

Design, synthesis and antibacterial evaluation of novel 15-membered 11a-azahomoclarithromycin derivatives with the 1, 2, 3-triazole side chain

Qin, Yinhui,Teng, Yuetai,Ma, Ruixin,Bi, Fangchao,Liu, Zhiyang,Zhang, Panpan,Ma, Shutao

, p. 321 - 339 (2019/07/18)

Macrolides are widely prescribed in clinic to treat various respiratory tract infections. However, due to their inappropriate use, the prevalence of macrolide-resistant strains among clinical isolates has become a concern for public health. Therefore, nov

Copper Acetate Catalyzed Regio-selective Synthesis of Substituted 1,2,3-Triazoles: A Versatile Azide–Alk-ene Cycloaddition/Oxidation Approach

Rohilla, Sandeep,Patel, Shyam Sunder,Jain, Nidhi

, p. 847 - 854 (2017/01/18)

A copper acetate catalyzed oxidative cycloaddition reaction of benzyl and aryl azides with terminal and internal olefins that contain electron-withdrawing groups (COOR, CONH2, CN, CHO, COR) has been developed. The reaction employs air as the oxidant and does not require any base or additives to afford 1,4-disubstituted and 1,4,5-trisubstituted 1,2,3-triazoles in good to excellent yields with high regioselectivity.

Arylazide cycloaddition to methyl propiolate: DFT-based quantitative prediction of regioselectivity

Molteni, Giorgio,Ponti, Alessandro

, p. 2770 - 2774 (2007/10/03)

Several 1-(4-substituted)-phenyl-4- or 5-methoxycarbonyl-1,2,3-triazoles have been synthesized by 1,3-dipolar cycloaddition of the corresponding arylazides to methyl propiolate in carbon tetrachloride. The regioselectivity of these reactions cannot be rat

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