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939436-99-4

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939436-99-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 939436-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,9,4,3 and 6 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 939436-99:
(8*9)+(7*3)+(6*9)+(5*4)+(4*3)+(3*6)+(2*9)+(1*9)=224
224 % 10 = 4
So 939436-99-4 is a valid CAS Registry Number.

939436-99-4Relevant articles and documents

Mechanism-based design, synthesis and biological studies of N 5-substituted tetrahydrofolate analogs as inhibitors of cobalamin-dependent methionine synthase and potential anticancer agents

Zhang, Zhili,Tian, Chao,Zhou, Shouxin,Wang, Wei,Guo, Ying,Xia, Jie,Liu, Zhenming,Wang, Biao,Wang, Xiaowei,Golding, Bernard T.,Griff, Roger J.,Du, Yansheng,Liu, Junyi

, p. 228 - 236 (2013/02/22)

A number of 8-deazatetrahydrofolates bearing electrophilic groups on N 5 were designed and synthesized based on the action mechanism of methionine synthase, and their biological activities were investigated as well. Compounds (11b, 12b and 16)

Novel 8-deaza-5,6,7,8-tetrahydroaminopterin derivatives as dihydrofolate inhibitor: Design, synthesis and antifolate activity

Zhang, Zhili,Wu, Jun,Ran, Fuxiang,Guo, Ying,Tian, Ran,Zhou, Shouxin,Wang, Xiaowei,Liu, Zhenming,Zhang, Liangren,Cui, Jingrong,Liu, Junyi

experimental part, p. 764 - 771 (2009/09/27)

We report, for the first time, the synthesis and biological activities of 8-deaza-5,6,7,8-tetrahydroaminopterin 9, and the 5-substituted and 5,10-disubstituted analogues 11, 13, 15, and 17. The analogues were obtained from key compound diethyl 8-deaza-5,6,7,8-tetrahydroaminopterin 8 following the catalytic reduction of the pyridine ring of diethyl 8-deaza aminopterin 5. The five novel 8-deaza-5,6,7,8-tetrahydroaminopterin derivatives were assayed in vitro for their cytotoxicity on BGC-823, HL-60, Bel-7402 and Hela tumor cell lines, and inhibition on recombinant human dihydrofolate reductase (DHFR), among which the most potent molecule (compound 9) was about 4- to 10-fold poorer than MTX on the four kinds of tumor cell lines, and its effect on DHFR was about 17-fold poorer than MTX. The docking studies were followed to explain the biological testing results.

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