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1337971-33-1

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1337971-33-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1337971-33-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,7,9,7 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1337971-33:
(9*1)+(8*3)+(7*3)+(6*7)+(5*9)+(4*7)+(3*1)+(2*3)+(1*3)=181
181 % 10 = 1
So 1337971-33-1 is a valid CAS Registry Number.

1337971-33-1Downstream Products

1337971-33-1Relevant articles and documents

Anti-AIDS agents 87. New bio-isosteric dicamphanoyl-dihydropyranochromone (DCP) and dicamphanoyl-khellactone (DCK) analogues with potent anti-HIV activity

Liu, Hong-Shan,Xu, Shi-Qing,Cheng, Ming,Chen, Ying,Xia, Peng,Qian, Keduo,Xia, Yi,Yang, Zheng-Yu,Chen, Chin-Ho,Morris-Natschke, Susan L.,Lee, Kuo-Hsiung

, p. 5831 - 5834 (2011)

Six 3′R,4′R-di-O-(S)-camphanoyl-2′,2′- dimethyldihydropyrano[2,3-f]chromone (DCP) and two 3′R,4′R-di-O-(S)- camphanoyl-(+)-cis-khellactone (DCK) derivatives were designed, synthesized, and evaluated for inhibition of HIV-1NL4-3 replication in TZM-bl cells. 2-Ethyl-2′-monomethyl-1′-oxa- and -1′-thia-DCP (5a, 6a), as well as 2-ethyl-1′-thia-DCP (7a) exhibited potent anti-HIV activity with EC50 values of 30, 38 and 54 nM and therapeutic indexes of 152.6, 48.0 and 100.0, respectively, which were better than or comparable to those of the lead compound 2-ethyl-DCP in the same assay. 4-Methyl-1′-thia-DCK (8a) also showed significant inhibitory activity with an EC50 of 128 nM and TI of 237.9.

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