US6316640 (http://l2.espacenet.com/dips/bnsviewer?CY=ep&LG=en&DB=EPD&PN=US6316640&ID=US+++6316640B1+I+)
(http://l2.espacenet.com/dips/bnsviewer?CY=ep&LG=en&DB=EPD&PN=US6316640&ID=US+++6316640B1+I+)4-chlorobutanol (http://l2.espacenet.com/dips/bnsviewer?CY=gb&LG=en&DB=EPD&PN=GB2040920&ID=GB+++2040920A++I+)
(http://l2.espacenet.com/dips/bnsviewer?CY=gb&LG=en&DB=EPD&PN=GB2040920&ID=GB+++2040920A++I+)