WORCESTER, Mass.--(BUSINESS WIRE)--RXi Pharmaceuticals Corporation today announced that on February 14, 2008 the U.S. Securities and Exchange Commission (SEC) has declared its Registration Statement on Form S-1 effective. RXi’s parent company, CytRx (NASDAQ: CYTR), has announced today that it intends to distribute shares in RXi to its current shareholders on or about March 11, 2008. Following the distribution of RXi’s shares by CytRx, RXi will trade on the NASDAQ Capital Market under the symbol “RXII”.