Mo. Rev. Stat. § 339.610
Any funds received by an escrow agent from any person that are to be used for third-party expenses shall be deposited no later than five banking days after receipt in an escrow account in any federally insured bank, savings and loan association or credit union. The funds in such escrow account shall be expended for the intended use by the escrow agent within ninety days after the obligations of the third party have been completed.
(L. 1993 S.B. 18 § 339.610 subsec. 1)