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742682-91-3

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742682-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 742682-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,2,6,8 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 742682-91:
(8*7)+(7*4)+(6*2)+(5*6)+(4*8)+(3*2)+(2*9)+(1*1)=183
183 % 10 = 3
So 742682-91-3 is a valid CAS Registry Number.

742682-91-3Relevant articles and documents

Inhibition of 1-deoxy-d-xylulose-5-phosphate reductoisomerase by lipophilic phosphonates: SAR, QSAR, and crystallographic studies

Deng, Lisheng,Diao, Jiasheng,Chen, Pinhong,Pujari, Venugopal,Yao, Yuan,Cheng, Gang,Crick, Dean C.,Prasad, B. V. Venkataram,Song, Yongcheng

, p. 4721 - 4734 (2011/09/19)

1-Deoxy-d-xylulose-5-phosphate reductoisomerase (DXR) is a novel target for developing new antibacterial (including antituberculosis) and antimalaria drugs. Forty-one lipophilic phosphonates, representing a new class of DXR inhibitors, were synthesized, among which 5-phenylpyridin-2-ylmethylphosphonic acid possesses the most activity against E. coli DXR (EcDXR) with a K i of 420 nM. Structure-activity relationships (SAR) are discussed, which can be rationalized using our EcDXR:inhibitor structures, and a predictive quantitative SAR (QSAR) model is also developed. Since inhibition studies of DXR from Mycobacterium tuberculosis (MtDXR) have not been performed well, 48 EcDXR inhibitors with a broad chemical diversity were found, however, to generally exhibit considerably reduced activity against MtDXR. The crystal structure of a MtDXR:inhibitor complex reveals the flexible loop containing the residues 198-208 has no strong interactions with the 3,4-dichlorophenyl group of the inhibitor, representing a structural basis for the reduced activity. Overall, these results provide implications in the future design and development of potent DXR inhibitors.

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