EXHIBIT 31.1
Published on March 24, 2009
Exhibit 31.1
CERTIFICATION
I, Chang
H. Ahn, certify that:
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1.
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I
have reviewed this Amendment No. 1 to the annual report on Form 10-K
of Rexahn Pharmaceuticals, Inc. and
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2.
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Based
on my knowledge, this report does not contain any untrue statement of a
material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this
report;
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Date:
March 24, 2009
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/s/
Chang H. Ahn
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Chang
H. Ahn
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Chief
Executive Officer
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