• 54536-15-1 (free base)
  Caffeine Impurity 1 (Sodium 4-[N-Methyl-N-(N-Methylaminocarbonyl)amino]-1-methylimidazole-5-Carboxylate)
  
• 112849-47-5
  Calcipotriol Impurity 1
  
• 52080-72-5
  Calcium Lactogluconate
  
• 647852-82-2
  =-7-Ethyl-10-Hydroxy Camptothecin
  
• 847460-53-1
  Cangrelor Impurity 2
  
• 163706-51-2
  Cangrelor Impurity 5
  
• 1830294-25-1
  Cangrelor Impurity 8
  
• 3094-09-5 (non-labeled)
  5'-DFUR-13C5 (5'-Deoxy-5-fluorouridine, Doxifluridine-13C5)
  
• 11003-38-6
  Capreomycin
  
• 62639-89-8
  Capreomycin IIA
  
• 509101-57-9
  16,17-Dehydro Capsaicin
  
• 112848-19-8
  16-Hydroxy Capsaicin
  
• 69173-71-3
  17-Hydroxy Capsaicin
  
• 470-38-2
  Capsorubin
  
• 65134-74-9
  Captopril Impurity N
  
• 62571-86-2 (non-labelled)
  Captopril-13C5
  
• 1217528-81-8
  Carbamazepine Impurity 3
  
• 104746-03-4
  R-Licarbazepine
  
• 1246819-09-9
  rac-Carbidopa EP Impurity I
  
• 52514-63-3
  Carbidopa EP Impurity E
  
• 1458640-32-8
  Carbidopa EP Impurity F
  
• 1361017-74-4
  Carbidopa EP Impurity H
  
• 91908-71-3
  Carbidopa Ethyl Ester
  
• 76498-29-8
  Carboprost Trometamol EP Impurity A
  
• 35864-81-4
  Carboprost Trometamol EP Impurity B
  
• 34866-47-2
  Carbuterol
  
• 1541172-75-1
  Carfilzomib Impurity 2
  
• 38155-18-9（free base）
  Carfilzomib Impurity 3
  
• 1009553-88-1
  Carglumic Acid Impurity C
  
• 1231947-89-9
  Cariprazine impurity 4
  
• 839712-25-3
  N-Didesmethyl Cariprazine
  
• 114041-33-7
  Carprofen Impurity 1
  
• 23734-06-7
  Carquejol
  
• 53371-79-2
  Carteolol EP Impurity H HCl
  
• 51781-13-6
  Carteolol EP Impurity D
  
• 56660-90-3
  Carteolol EP Impurity E
  
• 54945-72-1
  Carteolol EP Impurity G
  
• 51781-14-7
  Carteolol EP Impurity C
  
• 179463-17-3 (Freebase)
  Caspofungin Di-Acetate
  
• 1202167-57-4
  Caspofungin Impurity A
  
• 188915-50-6
  Cefaclor EP Impurity E
  
• 143059-69-2
  Cefaclor Impurity C
  
• 47103-93-3
  Cefadroxil EP Impurity E
  
• 144790-28-3
  Cefadroxil EP Impurity D
  
• 147103-94-4
  Cefadroxil Impurity I
  
• 2378158-45-1
  Cefadroxil Dimer
  
• 147103-95-5
  Cefadroxil Impurity 3
  
• 182290-77-3
  Cefadroxil Sulfoxide
  
• 65870-51-1
  Cefalexin Impurity
  
• 36922-16-4
  Cefamandole Impurity C Sodium Salt
  
• 905712-22-3
  Cefathiamidine Lactone
  
• 26973-80-8
  Cefathiamidine Impurity 1
  
• 70149-63-2
  Cefazedone Impurity 4
  
• 788106-07-0
  Cefazedone Impurity 5
  
• 56187-36-1
  Cefazedone Impurity 6
  
• 18884-65-6
  Cefazedone Impurity 10
  
• 2384108-14-7
  Cefazolin Impurity B
  
• 1172998-53-6
  Cefazolin Impurity G
  
• 32510-61-5
  Cefazolin Impurity D
  
• 56842-77-4
  Cefazolin Impurity C
  
• 135889-00-8
  Cefcapene
  
• 2445326-67-8
  Cefcapene Impurity 1
  
• 178601-89-3
  Cefdinir 7-isomer
  
• 71091-93-5
  Cefdinir Impurity G
  
• 178422-40-7
  Thiazolylacetylglycine Oxime Acetal
  
• 1330164-22-1
  Cefdinir Isoxazole Analog
  
• 79350-14-4
  Cefdinir Glyoxalic Analog
  
• 946573-41-7
  Cefdinir Lactone
  
• 79350-10-0
  Cefdinir Related Compound B
  
• 1450758-21-0
  Cefdinir Impurity A
  
• 947597-36-6
  Cefdinir Impurity S（Triethylamine Salt）
  
• 178422-45-2
  Cefdinir Impurity 4
  
• 2409806-43-3
  Cefditoren impurity 2, Cefditoren open ring
  
• 148774-47-4
  Cefditoren Pivoxil Impurity 4
  
• 138514-32-6
  Cefditoren impurity 6, cefditoren E-isomer
  
• 878002-85-8
  Cefditoren Pivoxil Dimer
  
• 2375345-02-9
  Cefditoren Impurity 11
  
• 97164-57-3
  Cefepime Impurity A
  
• 104301-63-5
  Cefepime Impurity C
  
• 108691-83-4
  Cefixime EP Impurity C
  
• 97164-56-2
  Cefixime Impurity D
  
• 72701-01-0
  Cefixime Impurity E
  
• 88621-01-6
  Cefixime methyl ester
  
• 74228-11-8
  Cefmetazole Impurity 10
  
• 56796-16-8
  Cefmetazole Impurity 5
  
• 51138-06-8
  Cefoperazone EP Impurity C Sodium Salt
  
• 120533-29-1
  =-Cefodizime
  
• 61270-58-4
  Cefonicid
  
• 73240-08-1
  Cefoperazone EP Impurity A
  
• 711598-76-4
  Cefoperazone EP Impurity B
  
• 1315481-36-7
  Cefoperazone Impurity F
  
• 37539-03-0
  Cefoperazone Impurity D
  
• 66403-32-5
  Cefotaxime Impurity C
  
• 63527-53-7
  Cefotaxime EP Impurity D
  
• 2489535-06-8
  Cefotaxime Impurity G Sodium Salt
  
• 142182-63-6
  delta-Cefotiam
  
• 94089-00-6
  Cefoxitin Impurity A Sodium Salt
  
• 1422023-33-3
  Cefoxitin Impurity D
  
• 947692-14-0
  Cefpodoxime Proxetil Impurity B
  
• 947692-13-9
  Cefpodoxime Proxetil Impurity D