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3435-56-1

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3435-56-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3435-56-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,4,3 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 3435-56:
(6*3)+(5*4)+(4*3)+(3*5)+(2*5)+(1*6)=81
81 % 10 = 1
So 3435-56-1 is a valid CAS Registry Number.

3435-56-1Relevant articles and documents

Design and synthesis of 6-oxo-1,4,5,6-tetrahydropyrimidine-5-carboxylate derivatives as neuraminidase inhibitors

Lou, Jun,Yang, Xiaoyan,Rao, Zhigang,Qi, Wenwen,Li, Jinhui,Wang, Haiyu,Li, Yuxi,Li, Jinping,Wang, Zhiming,Hu, Xianming,Liu, Peng,Hong, Xuechuan

, p. 466 - 473 (2014/07/21)

A series of 6-oxo-1,4,5,6-tetrahydropyrimidine-5-carboxylate derivatives were prepared to evaluate their ability of inhibiting neuraminidase (NA) of influenza A virus. All the compounds were synthesized in good yields starting from aldehyde by using a suitable synthetic strategy, which showed moderate inhibitory activity against influenza A NA. Compound 6g exhibited the strongest inhibitory activity against influenza virus A NA (IC50 = 17.64 μM), which indicated pyrimidine ring could be used as a core structure to design novel influenza NA inhibitors.

Synthesis and anti-tumor activity of novel ethyl 3-aryl-4-oxo-3,3a,4,6- tetrahydro-1H-furo[3,4-c]pyran-3a-carboxylates

Wang, Tiantian,Liu, Jia,Zhong, Hanyu,Chen, Huan,Lv, Zhiliang,Zhang, Yikai,Zhang, Mingfeng,Geng, Dongping,Niu, Chunjuan,Li, Yongmei,Li, Ke

scheme or table, p. 3381 - 3383 (2011/06/24)

A series of ethyl 3-aryl-4-oxo-3,3a,4,6-tetrahydro-1H-furo[3,4-c]pyran-3a- carboxylates were prepared through the metal-catalyzed domino reaction of alkylidene malonates and 1,4-butynediol under a one-pot reaction condition at room temperature. Their in vitro anti-proliferative activities were subsequently evaluated in A549, QGY and HeLa cells. The majority of the compounds showed potent anti-tumor activity against HeLa cells. In particular, compound 3l was the most potent compound with IC50 value of 5.4 μM. For the first time, the X-ray structure of the anti-tumor ethyl 3-aryl-4-oxo-3,3a,4,6- tetrahydro-1H-furo[3,4-c]pyran-3a-carboxylates is determined.

A practical Knoevenagel condensation catalyzed by PEG400 and anhydrous K2CO3 without solvent

Cao, Yu-Qing,Dai, Zhi,Zhang, Rui,Chen, Bao-Hua

, p. 2965 - 2971 (2007/10/03)

Knoevenagel condensation of aromatic aldehydes with active methylene compounds under solvent-free conditions to synthesize arylidene compounds in good to excellent yields using powdered anhydrous K2CO3 and PEG400 as catalysts has bee

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