http://www.orgsyn.org/orgsyn/prep.asp?prep=cv4p0671 (http://www.orgsyn.org/orgsyn/prep.asp?prep=cv4p0671)
http://www.orgsyn.org/orgsyn/prep.asp?prep=cv2p0578 (http://www.orgsyn.org/orgsyn/prep.asp?prep=cv2p0578)
http://directory.google.com/Top/Business/Chemicals/Asia/ (http://directory.google.com/Top/Business/Chemicals/Asia/)
for a rough guide), then you can find it even cheaper.