Exhibit 31.3


I, Marco Taglietti, certify that:



I have reviewed this Form 10-/A of SCYNEXIS, Inc.; and



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.



Date: April 28, 2020


/s/ Marco Taglietti, M.D.

Marco Taglietti, M.D.

Chief Executive Officer