Co  [  a - z  ] Nummer
Cobalt 12 / 18 / 19 / # (19a+c)
Cobalt-(II)-acetat Tetrahydrat 12 / 18 / 19a+b / # (19c)
Cobalt-benzolsulfonat 14 / 12 / 18 / 19 / # (19a)
Cobalt-carbonat 12 / 18 / 19a+b / # (19c)
Cobalt-(II)-chlorid 14 / 12 / 16 / 18 / 19 / 19b
19a - # 220 / # (19c)
Cobalt-(II)-chlorid Hexahydrat 14 / 12 / 16 / 18 / 19 /
19a - # 220
Cobalt-di-chlorid 14 / 12 / 16 / 18 / 19 / 19b
19a - # 220 / # (19c)
Cobalt-(II)-nitrat Hexahydrat 14 / 12 / 13 / 16 / 18 / 19
19a+b /
# (19c)
Cobaltoctacarbonyl 14 / 12 / 18 / 19
Cobaltoxid 12 / 18 / 19a / # (19c)
Cobalt-(II)-sulfat 14 / 12 / 18 / 19 /
19a - # 220
Cobalt-(II)–sulfat Heptahydrat 14 / 12 / 18 / 19 / 19b
19a - # 220 / # (19c)
Cobaltsulfid 12 / 18 / 19 / # (19a+c)
Cobalt-Verbindungen 12 / 18 / # (19a+c)
Cocain   »Online!« 14 / # 229 Info
d-Cocain 14
Cochenillerot A 16
Cocobolo 18
Cocusholz
Codein 14 / 18 / # 230 Info
Codein-N-oxid 14 / # 230 Info
Codeinphosphat-Hemihydrat 14
Codiaeum variegatum pictum 18
Codoxim 14
Coffea arabica
Coffearin
Coffein 14 / # (19c)
Cola acuminata 14
Colcemid 14 / 16 / # (19c)
Colchicin 14 / 16 / # (19c) /
»Tödlich(!)«
Colchicosid 16
Colchicum autumnale 14 / 16
Colestyramin xxx
Coleus–Blumei-Hybriden 16
Collman’s Reagens xxx
Colophonium 18
Colutea arborescens 16
Concanavalin A 14
Condurango 16
Conessin
Coniferylbenzoate 16 / selten 18
D L - Coniin xxx
Coniin 14
Conium maculatum
Consolida regalis 16
Convalla-marogenin 14
Convallaria-majalis
Convalla-toxin
Convolvamin
Conyrin
Coomassie Brillant blue  G 250 16
Coomassie Brillant blue  R 250
Copaifera reticulata
Copaifera reticulata 14 / # 56 Alkohol
Coprin xxx
Coprinus atramentarius # 56 Alkohol
(-)-Coralynchlorid Hydrat 14
Corazol 8
Coriaria myrtifolia 16
Cornus sanguinea
Coronilla varia
Coroxon 14
Cortinarius gentilis # 227 H
Cortinarius orellanus 14 / 9
Cortinarius speciosissimus
Cortinarius splendens 14 / 15
Cortinarius traganus 16
Cortison xxx
Corydalis cava 14
Corynanthin
D L - Corypalmin
Costunolid Selten 18
Costus 18
Costuswurzelöl
Cotinin 14
Cotinus coggygria # 227 H
Cotoneaster-Medicus-Arten 7 / # 227 (+)
Co-Trimoxazol xxx
Cotyledon orbiculata # 227 ++
Coumachlor 3a / 18
Coumafuryl 14
Coumaphos 14 / 19
Coumatetralyl
Coumetarol 16
Coumithoat 4 / 19