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138498-62-1

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138498-62-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138498-62-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,4,9 and 8 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 138498-62:
(8*1)+(7*3)+(6*8)+(5*4)+(4*9)+(3*8)+(2*6)+(1*2)=171
171 % 10 = 1
So 138498-62-1 is a valid CAS Registry Number.

138498-62-1Downstream Products

138498-62-1Relevant articles and documents

HIV-1 protease inhibitors based on hydroxyethylene dipeptide isosteres: An investigation into the role of the P1' side chain on structure-activity

Young,Payne,Thompson,Gaffin,Lyle,Britcher,Graham,Schultz,Deana,Darke,Zugay,Schleif,Quintero,Emini,Anderson,Huff

, p. 1702 - 1709 (2007/10/02)

A systematic investigation was undertaken to determine the role of the P1' sidechain in a series of hydroxyethylene isostere based inhibitors of HIV-1 protease. Substitution and homologation of the benzyl P1' side chain of the Phe-Phe isostere based pseudo peptides 1 (L-682,679) and 2 (L-685,434) with various heteroalkyl groups leads to a series of extremely potent inhibitors of the enzyme. Several examples of the most potent inhibitors were very effective in an ex vivo cell based viral spread assay using human H9 T- lymphocytes and the IIIb isolate of HIV-1. Compound 19 is 120 times more potent than 1 and 16 times more potent than 2 in inhibiting the spread of infection in this assay.

Synthesis and antiviral activity of a series of HIV-1 protease inhibitors with functionality tethered to the P1 or P1'phenyl substituents: X-ray crystal structure assisted design

Thompson,Fitzgerald,Holloway,Emini,Darke,McKeever,Schleif,Quintero,Zugay,Tucker,Schwering,Homnick,Nunberg,Springer,Huff

, p. 1685 - 1701 (2007/10/02)

By tethering of a polar hydrophilic group to the P1 or P1' substituent of a Phe-based hydroxyethylene isostere, the antiviral potency of a series of HIV protease inhibitors was improved. The optimum enhancement of anti-HIV activity was observed with the 4-morpholinylethoxy substituent. The substituent effect is consistent with a model derived from inhibitor docked in the crystal structure of the native enzyme. An X-ray crystal structure of the inhibited enzyme determined to 2.25 A verifies the modeling predictions.

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