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870533-26-9

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870533-26-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 870533-26-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,0,5,3 and 3 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 870533-26:
(8*8)+(7*7)+(6*0)+(5*5)+(4*3)+(3*3)+(2*2)+(1*6)=169
169 % 10 = 9
So 870533-26-9 is a valid CAS Registry Number.

870533-26-9Relevant articles and documents

Visible Light-Induced Amide Bond Formation

Song, Wangze,Dong, Kun,Li, Ming

supporting information, p. 371 - 375 (2019/11/29)

A metal-, base-, and additive-free amide bond formation reaction was developed under an organic photoredox catalyst. This green approach showed excellent functional selectivity without affecting other functional groups such as alcohols, phenols, ethers, esters, halogens, or heterocycles. This method featured a broad substrate scope, good compatibility with water and air, and high yields (≤95%). The potential utilities were demonstrated by the synthesis of important drug molecules such as paracetamol, melatonin, moclobemide, and acetazolamide.

Synthesis and biological evaluation of terminal functionalized thiourea-containing dipeptides as antitumor agents

Huang, Ri-Zhen,Zhang, Bin,Huang, Xiao-Chao,Liang, Gui-Bin,Qin, Jian-Mei,Pan, Ying-Ming,Liao, Zhi-Xin,Wang, Heng-Shan

, p. 8866 - 8878 (2017/02/10)

A series of antitumor agents based on terminal functionalized dipeptide derivatives containing the thiourea moiety were synthesized and evaluated for antiproliferative activity using a panel of cancer cell lines, and the effects and mechanism of apoptosis induction were determined. These compounds exhibited significant selectivity to different cancer cell lines with IC50 values at micromolar concentrations. In particular, compound I-11 appeared to be the most potent compound, with an IC50 = 4.85 ± 1.44 μM against the NCI-H460 cell line, at least partly, by the induction of apoptosis. Mechanistically, compound I-11 induced the activation of caspase-12 and CHOP, which triggered apoptotic signalling via the ROS-dependent endoplasmic reticulum pathway and arrested the cell cycle at the S phase. Thus, we concluded that dipeptide derivatives containing the thiourea moiety terminally functionalized by electron-withdrawing substituents may be potential antitumor agents for further investigation.

Proline-based dipeptides with two amide units as organocatalyst for the asymmetric aldol reaction of cyclohexanone with aldehydes

Chen, Fubin,Huang, Shi,Zhang, Hui,Liu, Fengying,Peng, Yungui

, p. 9585 - 9591 (2008/12/22)

A series of proline-based dipeptide organocatalysts with two amide units (1-16) have been developed and evaluated in the direct catalytic asymmetric aldol reactions of aldehydes with cyclohexanone. These catalysts showed good solubility in organic solvents compared with their corresponding carboxyl terminal dipeptides. The robust amide bond formation allowed structural modifications and fine tuning of catalyst properties by varying the stereo and electronic effects of the terminal amide to affect the ability of hydrogen bonding formation between the catalysts and the substrates. The reactions proceeded smoothly in high yields (up to 99%), enantioselectivities (up to 98% ee) and anti-diastereoselectivities (up to 99:1) in the presence of bifunctional organocatalyst 4 under the optimal reaction conditions.

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