Index: content_type_extensions.properties
===================================================================
--- content_type_extensions.properties	(revision 13762)
+++ content_type_extensions.properties	(working copy)
@@ -222,6 +222,23 @@
 audio/x-realaudio=ra
 audio/x-wav=wav
 audio/wav=wav
+chemical/x-cdx=cdx
+chemical/x-chemdraw=chm
+chemical/x-cif=cif
+chemical/x-chem3d=c3d
+chemical/x-crossfire=bsd
+chemical/x-daylight-smiles=smi
+chemical/x-embl-dl-nucleotide=emb
+chemical/x-gamess-input=inp gam
+chemical/x-gaussian-input=gau
+chemical/x-gaussian-cube=cub
+chemical/x-genbank=gen
+chemical/x-jcamp-dx=jdx dx
+chemical/x-mdl-molfile=mol
+chemical/x-mopac-input=mop
+chemical/x-ncbi-asn1=asn
+chemical/x-ncbi-asn1-binary=val
+chemical/x-swissprot=sw
 chemical/x-pdb=pdb xyz
 graphics/x-inventor=iv
 image/bitmap=bmp dib