Chitosan脱乙酰壳多糖Chloramphenicol氯霉素Chlorogenic acid绿原酸/咖啡单宁酸Chlorophyll A叶绿素AChlorophyll B叶绿素BChlororphyll叶绿素Chlorophyllin叶绿酸2-Chloropyrazine 2-
Cholesteryl acetate胆甾醇乙酸酯Cholesteryl benzoate胆甾醇苯甲酸酯Cholesteryl chloride胆甾醇氯酯Cholesteryl oleate胆甾醇油酸酯Cholesteryl palmitate胆甾醇棕榈酸酯Cholester
Caffeic acid咖啡酸Callistephin chloride氯化翠菊苷Camphene莰烯Camphene莰烯（+）-Camphor （+）-樟脑DL-Camphor DL-樟脑DL-Camphor DL-樟脑（1S）-（-）-Camphor （1S）-（-）-
Cholic acid胆酸Cholic acid methylester胆酸甲酯Cholic acid sodium salt胆酸钠盐Chondroitin sulfate硫酸软骨素4-Chromanol4-Chromanone苯并二氢吡喃-4-酮Chrysanthellin AChrysanthellin B
Chrysin dimethylether柯因二甲醚ChrysoeriolChrysophanol大黄酚Chrysophanol大黄酚Cinchonidine辛可尼定Cinchonine辛可宁1,4-Cineole 1,4-按树脑trans-Cinnamaldehyde trans-肉桂醛trans-C
trans-Cinnamyl alcohol trans-肉桂醇Citral柠檬醛Citral柠檬醛Citric acid柠檬酸Citrinin桔霉素（-）-Citronellal香茅醛L-Citronellol L-香茅醇DL-β-Citronellol DL-β-香茅醇D-Citrone
DL-Citronellyl acetate DL-香茅醇乙酸酯CitroptenL-Citrulline L-瓜氨酸CnicinCochineal胭脂虫Colchicine秋水仙素Colophony松香Conessine康丝碱Coniferyl alcohol松柏醇DL-Coniine hydroch
（-）-Coralyne Chloride （-）-Corynanthine柯喃因Corynanthine hydrochloride盐酸柯喃因2-Coumaric acid 2-香豆酸3-Coumaric acid 3-香豆酸4-Coumaric acid 4-香豆酸Coumarin香豆素Coumar
（+）-Catechin （+）-儿茶素（+）-Catechin （+）-儿茶素（+）-Catechin aqueousDL-Catechin DL-儿茶素Catechin Kit儿茶素试剂包Catechol儿茶酚Caulophyllogenin（-）-α-Cedrene
Cerulenin浅蓝菌素Cetyl alcohol鲸蜡醇/十六烷醇α-ChaconineChalcone查耳酮ChamazulenChelerythrine白屈菜赤碱Chelerythrine chloride氯化白屈菜赤碱Chelidonic acid白屈菜酸（+