| Cephalexin | Cephalexin | Cefepime | Cefepime | Cefprozil | Cefprozil |
| Cephalexin Impurity A(EP) | Cefepime Impurity A (EP) | Cefprozil Impurity A(EP) |
| Cephalexin Impurity B(EP) | Cefepime Impurity B(EP) | Cefprozil Impurity B(EP) |
| Cephalexin Impurity C(EP) | Cefepime Impurity C (EP)(1:1 mixture) | Cefprozil Impurity C(EP) |
| Cephalexin Impurity E(EP) | Cefepime Impurity D(EP) | Cefprozil Impurity D(EP) |
| Cephalexin Impurity F(EP) | Cefepime Impurity E (EP) | Cefprozil Impurity E(EP) |
| Cephalexin Impurity C2 | Cefepime Impurity F | Cefprozil Impurity F(EP) |
| Cephalexin oxidation Impurity 1 | (6R,7S)- Cefepime | Cefprozil Impurity G(EP) |
| Cephalexin oxidation Impurity 2 | Cefepime Oxide Impurity | Cefprozil Impurity H(EP) |
| Cephalexin Dimer | Δ3-Cefepime Impurity B | Cefprozil Impurity I(EP) |
| 6R,7S)-Cephalexin | Cefepime-d3 Sulfate | Cefprozil Impurity J(EP) |
| Cephalexin Diketopiperazine | Δ3-Cefepime | Cefprozil Impurity K(EP) |
| Cephalexin-d5 Hydrate | Cefepime P1A Impurity | Cefprozil Impurity K1(EP) |
| Cephalexin Diketone | | | Cefprozil Impurity L(EP) |
| Cephalexin Degradation Impurity A | Cefpodoxime Proxetil | Cefpodoxime Proxetil | Cefprozil Impurity M(EP) |
| Cefalexin Ethyl Homolog 2 Impurity | Cefpodoxime Proxetil Impurity A(CP) | Cefprozil Impurity M1 |
| | | Cefpodoxime Proxetil Impurity B(CP) | Cefprozil Impurity M2 |
| Cefdinir | Cefdinir | Cefpodoxime Proxetil Impurity C(CP) | Cefprozil Impurity N(EP) |
| Cefdinir Impurity A (CP) | Cefpodoxime Proxetil Impurity D(CP) | Cefprozil Amide 1 |
| Cefdinir Impurity B (CP) | Cefpodoxime Proxetil Impurity E(CP) | Cefprozil Δ3 isomer |
| 7-AVCA Cefdinir Impurity C(CP) | Cefpodoxime Proxetil Impurity F(CP) | Cefprozil Dimer 1(Cefprozil Impurity I(USP)) |
| Cefdinir Sulfoxide Cefdinir Impurity D(CP) | Cefpodoxime Proxetil Impurity G(CP) | Cefprozil Dimer 3 |
| Cefdinir Impurity E (CP) | Cefpodoxime Proxetil Impurity H(CP) | Cefprozil Dimer 4 |
| Cefdinir Impurity F (CP) | Cefpodoxime Proxetil CP Impurity I | Cefprozil Lactone |
| Cefdinir Impurity G (CP) | Cefpodoxime Proxetil Impurity J(CP) | Cefprozil Oxide Impurity 1 |
| Cefdinir Impurity H (CP) | Cefpodoxime Proxetil Impurity K(CP) | Cefprozil Oxide Impurity 2 |
| Cefdinir Related Compound A (Mixture of Diastereomers),Cefdinir Impurity IJKL(CP) | Cefpodoxime Proxetil Impurity L | Cefprozil Oxide Impurity 3 |
| Cefdinir Impurity M (CP) | Cefpodoxime Proxetil Impurity M | E-Cefprozil Isomer |
| 6R,7S-Cefdinir Cefdinir Impurity N (CP) | Cefpodoxime Proxetil Impurity N | Cefprozil Oxide Impurity 4 |
| Cefdinir Impurity O(CP) | 7-AMCA(Cefpodoxime Proxetil Mother Nucleus) | Cefprozil Impurity N Intermediate |
| Cefdinir Impurity PQ (CP) | Cefpodoxime Proxetil Trans-Impurity G | Cefprozil Mother Nucleus Dimer |
| Cefdinir Impurity R(CP) | Cefpodoxime Acid Δ3 Isomer | Cefprozil double Mother Nucleus |
| Cefdinir Impurity S (CP) | (E)-Cefpodoxime Proxetil Impurity A | | |
| Cefdinir Impurity TU (CP) | (E)-Cefpodoxime Acid Oxide Impurity | Cefodizime Sodium | Cefodizime Sodium |
| Cefdinir Impurity A (USP) | Cefpodoxime Proxetil Impurity H-A | (6R,7S)-Cefodizime |
| Cefdinir Impurity 11(Acetamide Cefdinir) | Cefpodoxime Proxetil Double-Bond Shift Impurity K | 7E-Cefodizime |
| Cefdinir Dimer | Cefpodoxime Double Mother Nucleus Double-Bond Transfer Impurity | Δ3-Cefodizime |
| 7-AVCA-Dimer(Cefdinir Mother Nucleus Dimer ) | Cefpodoxime Proxetil Impurity N-Δ3 | Cefodizime lactone |
| Cefdinir Degradation Impurity 1 | Cefpodoxime Proxetil Double Mother Nucleus | Cefodizime oxidation Impurity 1 |
| Cefdinir Acetaldehyde Analogue | Cefpodoxime Polymer 1 | Cefodizime oxidation Impurity 2 |
| Cefdinir Acetaldehyde Analogue Side-chain Acid | Cefpodoxime Polymer 2 | Cefodizime oxidation Impurity 3 |
| Cefdinir Double Mother Nucleus | Cefpodoxime Polymer 3 | Cefodizime oxidation Impurity 4 |
| Cefdinir Glycine Oxime Acid Aldehyde | Cefpodoxime Polymer 4 | Cefodizime Impurity 1 |
| | | | | Cefodizime Impurity 1 Precursor |
| Cefuroxime sodium | Cefuroxime sodium | Cefuroxime Axetil | Cefuroxime Axetil | Cefodizime Bilateral Chain Impurity |
| Cefuroxime Sodium Impurity A (EP) | Cefuroxime Axetil Impurity A (EP) | Cefodizime Dimer |
| Cefuroxime Sodium Impurity B (EP) | Cefuroxime Axetil Impurity B (EP) | Cefodizime Dimer-△3 |
| Cefuroxime Sodium Impurity C (EP) | Cefuroxime Axetil Impurity C (EP),Cefuroxime Sodium Impurity D(EP) | | |
| Cefuroxime Sodium Impurity E (EP) | Cefuroxime Axetil Impurity D(EP) | Cefmenoxime | Cefmenoxime |
| Cefuroxime Sodium Impurity F (EP) | Cefuroxime Axetil Impurity E(EP) | (6R,7S)-Cefmenoxime |
| Cefuroxime Sodium Impurity G (EP) | Cefuroxime Axetil Oxide Impurity | (E)-Cefmenoxime |
| Cefuroxime Sodium Impurity H (EP) | Cefuroxime Axetil Dimer(Mixture) | (Δ3)-Cefmenoxime |
| Cefuroxime Sodium Impurity D(EP),Cefuroxime Axetil Impurity C (EP) | Cefuroxime Axetil-d3 | Cefmenoxime open ring Impurity |
| Cefuroxime Sodium Impurity I (EP) | Cefuroxime Axetil Mother Nucleus | Cefmenoxime Oxidation impurity 1 |
| Cefuroxime Sodium Oxide Impurity 1 | | | Δ3-Cefmenoxime Bilateral chain |
| Cefuroxime Sodium Oxide Impurity 2 | Cefaclor | Cefaclor | Cefmenoxime Double Parents |
| 6R,7S-Cefuroxime Sodium Isomer | Cefaclor Impurity A(EP), | | |
| Cefuroxime double mother nucleus | Cefaclor Impurity B(EP),7-ACCA | Cefathiamidine | Cefathiamidine |
| Cefuroxime Impurity 1 | Cefaclor Impurity C (EP) | CefathiaMidine Impurity A |
| Δ3-Cefuroxime Impurity D isomer | Cefaclor Impurity E (EP) | CefathiaMidine Impurity D |
| Cefuroxime-d3 | Cefaclor Impurity D (EP) | (6R,7S)-Cefathiamidine |
| Cefuroxime Sodium Impurity I(E) (E) | Cefaclor Impurity F (EP) | Δ3-CefathiaMidine |
| △3-Cefuroxime | Cefaclor Impurity H (EP) | CefathiaMidine oxidation Impurity 1 |
| | | Cefaclor Dimer | Deacetyl CefathiaMidine oxidation Impurity |
| Cefmenoxime | Cefmenoxime | Cefaclor-S-Oxide Impurity | 7-BCA |
| (6R,7S)-Cefmenoxime | Cefaclor Impurity 1 (JP) | 3- Methyl Cefathiamidine |
| (E)-Cefmenoxime | Cefaclor Impurity G Isomer B | Cefathiamidine-d14 |
| (Δ3)-Cefmenoxime | Cefaclor Impurity 2 | Dibromo-cefathiamidine Intermediate |
| Cefmenoxime open ring Impurity | Cefaclor phenylglycine condensate | Cefathiamidine Intermediate Lactone |
| Cefmenoxime Oxidation impurity 1 | 6R,7S-Cefaclor | Isopropylamino Cefathiamidine |
| Δ3-Cefmenoxime Bilateral chain | Cefaclor Double parents | 3-Methyl Cefathiamidine Intermediate |
| Cefmenoxime Double Parents | Cefaclor-d5 | Bromoacetyl Cefathiamidine |
| | | Cefaclor Degradation A Impurity | | |
| Cephradine | Cephradine | Cefaclor Degradation B Impurity | Ceftaroline Fosamil | Ceftaroline Fosamil |
| Cefadroxil Impurity G(EP)(Cephalexin EP Impurity D,Cefradine EP Impuity F) | Cefaclor L-Configuration Impurity G | Ceftaroline Fosamil Impurity 1 |
| Cefradine Impurity C (EP) | Cefaclor Impurity G Isomer A | Ceftaroline Fosamil Impurity 2 |
| Cefradine Impurity D (EP) | Cefaclor Impurity E2 | Ceftaroline Fosamil Impurity 3 |
| Cefradine Impurity F (EP) | Cefaclor Impurity LL(Lilly Impurity) | Ceftaroline Fosamil Impurity 4 |
| Cefradine Impurity E (EP) | Isomer B of Cefaclor Impurity E | Ceftaroline Fosamil Impurity 5 |
| 7-ADCA pivalamide, Cefradine Impurity G (EP) | Cefaclor-PG-PGME Dimer | Ceftaroline Fosamil Impurity 6 |
| 4',5'-Dihydrocephradine | | | Ceftaroline Fosamil Impurity 7 |
| Tetrahydro cephradine | Cefmetazole | Cefmetazole | Ceftaroline Fosamil Inner salt-d3 |
| (△3)-Cefradine | Cefmetazole MMT Isomer | 3-Methylsulfonic Ceftaroline Fosamil(Intermediate) |
| Cefradine Double Mother Nucleus | △3-Cefmetazole | Ceftaroline Fosamil Intermediate 2 |
| Cefradine Dimer | Detetrazole Cefmetazole | Δ3-Ceftaroline Fosamil Intermediate 2 |
| Cephradine-d5 | Cefmetazole Lactone | Ceftaroline Fosamil Intermediate 4 |
| Cefradine Dioxide Impurity | Cefmetazole Open Ring Impurity | |
| Pivalamido-Cefradine(Terpentamide cefradine) | Cefmetazole oxidation Impurity | | |
| Cefradine Open ring | Cefmetazole Impurity 3 | Cefonicid sodium | Cefonicid sodium |
| | | Cefmetazole 7-chain | Cefonicid Oxide Impurity 1 |
| Cefminox sodium | Cefminox sodium | Cefmetazole 7-Tetrazole Double-Bond Shift | |
| Cefminox sodium Δ3 isomer | Cefmetazole 7-tetrazole Precursors | | |
| Cefminox Dimer 1 | Cefmetazole MMT Impurity | Cefoperazone | Cefoperazone |
| Cefminox Dimer 2 | Acetoxy Cefmetazole | Cefoperazone Impurity A(EP) |
| Cefminox Oxide Impurity 1 | Cefmetazole Side chain | Cefoperazone Impurity B(EP) |
| Cefminox Oxide Impurity 2 | Cefmetazole 3-position sulfur isomer and double bond transfer | Cefoperazone Impurity C(EP) |
| Cefminox Lactone | Cefmetazole Diphenyl Methyl Ester Δ3-Impurity | Cefoperazone Impurity D(EP) |
| Cefminox Degradation Product 2 | Cefmetazole Diphenyl Methyl Ester Impurity | Cefoperazone Impurity E(EP),7-ACA |
| Δ3-L-Cefminox Isomer | Cefmetazole 7-tetrazole | Cefoperazone Impurity F(EP) |
| Cefminox sodium Δ3 isomer 2 | Cefmetazole Side-Chain Oxide Impurity | Δ3-Cefoperazone,Cefoperazone Impurity G |
| Cefminox sodium Δ3 isomer 3 | Cefmetazole Demethylation Impurity | Cefoperazone Cefoperazone open ring Impurities |
| Cefminox Openring Lactone | Cefmetazole Oxide Impurity 2 | Cefoperazone oxidation Impurity 1 |
| Cefminox MMT Isomer Impurity | Cefmetazole Open-Ring Decarboxylation Impurity A | Cefoperazone oxidation Impurity 2 |
| L-Cefminox | Cefmetazole Open-Ring Decarboxylation Impurity B | Cefoperazone Double Parents |
| Cefminox Openring Impurity | Δ3-Cefmetazole 2 (Cefmetazole Degradation Impurity) | Cefoperazone Mother Nucleus |
| | Cefmetazole Impurity E | Cefoperazone Mother Nucleus Double-Bond Shift Impurity |
| | | Cefmetazole Impurity E | Cefoperazone Mother Nucleus Thiophenone Isomer |
| Cefpirome | Cefpirome | Cefmetazole Impurity E | Detetrazole Cefoperazone |
| 6R,7S-Cefpirome | Cefmetazole DIPHS Impurity | Cefoperazone Glycine Impurity |
| E-Cefpirome | 7-Methylmercapto Cefmetazole(Tetrabutyl Ammonium Hydroxide Salt) | L-Cefoperazone |
| Δ3-Cefpirome | | MSTC |
| Cefpirome Open-ring Impurity | | | Acetoxy Cefoperazone |
| Cefpirome Lactone | Cefadroxil | Cefadroxil | Cefoperazone Open-Ring Lactone |
| Cefpirome Oxide Impurity | Cefadroxil Impurity A(EP) | |
| Cefpirome Bilateral chain | Cefadroxil Impurity B(EP),7-ADCA | | |
| Cefpirome Double nucleus | Cefadroxil Impurity C(EP) | Ceftriaxone Sodium | Ceftriaxone Sodium |
| | Cefadroxil Impurity D(EP) | (E)-Ceftriaxone Ceftriaxone Impurity A (EP) |
| | | Cefadroxil Impurity E(EP) | 3-Desacetyl Cefotaxime Lactone Ceftriaxone Impurity B (EP) |
| Cephalothin | Cephalothin | Cefadroxil Impurity F(EP) | Ceftriaxone Impurity C (EP) |
| Cephalothin Impurity A(EP) | Cefadroxil Impurity G(EP)(Cephalexin EP Impurity D,Cefradine EP Impuity F) | AE Active Ester(Ceftriaxone Impurity D, Ceftriaxone Sodium Intermediate) |
| Cephalothin Impurity B(EP) | Cefadroxil Impurity I(EP) | Ceftriaxone Impurity E (EP) |
| Cephalothin Impurity C(EP) | Cefadroxil Dimer 1 | Δ3-Ceftriaxone |
| Cephalothin Impurity D(EP),Cefoxitin Impurity C(EP) | Cefadroxil Dimer 2 | eftriaxone Oxide Impurity |
| Cephalothin-3-isomer | Oxy-carbethoxy Cefadroxil | Ceftriaxone-d3 Disodium Salt |
| Δ3-Cephalothin-3-isomer | efadroxil Oxide Impurity | (6R,7S)-Ceftriaxone |
| | Cefadroxil Impurity 5 | Ceftriaxone Double Mother Nucleus |
| | | D-Cefadroxil Impurity F(EP) | Ceftriaxone Impurity P1A |
| Cefotaxime Sodium | Cefotaxime Sodium | L-Cefadroxil Impurity F(EP) | Trans AE Active Ester |
| Deacetoxycefotaxime Cefotaxime Impurity A (EP) | L-Cefadroxil Oxide Impurity | Ceftriaxone Impurity Triazole-CTR |
| Deacetoxycefotaxime Cefotaxime Impurity B (EP) | Δ3-Cefadroxil isomer | Ceftriaxone Dimer A |
| Deacetoxycefotaxime Cefotaxime Impurity C (EP) | Cefadroxil USP Impurity I | Ceftriaxone Dimer B |
| E-cefotaxime Cefotaxime Impurity D (EP) | Cefadroxil USP Impuity C | Ceftriaxone MTSC-CTRI Impurity |
| Deacetylcefotaxime lactone Cefotaxime Impurity E (EP) | Cefadroxil Degradation Impurity 3(Aspartame Degradation Product) | Ceftriaxone Impurity 2 |
| Cefotaxime Impurity F (EP) | Cefadroxil USP impuity J(Ethyl Cefadroxil ) | |
| ATA cefotaxime , Cefotaxime Impurity G (EP) | | | |
| E-Deacylation ATMAA, E-Deacylation Aminothiamic Acid, Cefotaxime Impurity M | | | Aztreonam | Aztreonam |
| Cefotaxime Impurity L,E- Cefotaxime Impurity E | Ceftazidime | Ceftazidime | Aztreonam Open-Ring Impurity |
| Cefotaxime Impurity N,Cefotaxime Open-ring Lactone | Ceftazidime Impurity A (EP) | Aztreonam Open-Ring Desulfurization Impurity |
| Cefotaxime Impurity K,Δ3-Cefotaxime | E-Ceftazidime Ceftazidime Impurity B (EP) | Aztreonam Desulfurization Impurity |
| Precursor of Cefotaxime Four-Membered Ring Lactam Fracture Product | Ceftazidime Impurity C (EP)(7-APCA,ceftazidime mother nucleus)) | Aztreonam and Arginine Polymerization Impurity 1 |
| (6R,7S)-Cefotaxime ,Cefotaxime Epimer | Ceftazidime Impurity D (EP6.0) | Aztreonam and Arginine Polymerization Impurity 2 |
| Cefotaxime Impurity Q,E- Cefotaxime Acid | Ceftazidime t-Butyl Ester Ceftazidime Impurity E (EP) | Aztreonam USP Impurity F(Aztreonam Ethyl Ester) |
| Cefotaxime Oxide Impurity 2 | Ceftazidime Impurity G (EP) | Aztreonam Impurity 1 |
| Cefotaxime Oxide Impurity 1 | Ceftazidime Methyl Ester Ceftazidime Impurity H (EP) | Aztreonam Impurity 2 |
| E-Cefotaxime Oxide Impurity 2 | Ceftazidime Oxide Impurity 2 | Aztreonam Impurity 7 |
| (E)-Cefotaxime Sodium Oxide Impurity 1 | (6R,7S)-Ceftazidime | Aztreonam Impurity 9 |
| Cefotaxime Dimer | (E)-Ceftazidime Oxide Impurity | Aztreonam E-Isomer |
| Cefotaxime-d3 | Ceftazidime-d5 | Aztreonam Open-Ring Ethyl Ester |
| Cefotaxime Proxetil-d3 | Ceftazidime Side Chain Impurity | Aztreonam Amide Impurity |
| ATMAA Dimer | Ceftazidime Lactone | Aztreonam USP Impurity B |
| Cefotaxime Dimer B | Ceftazidime Double Mother Nucleus Impurity | |
| Cefotaxime Double Nucleus A | Ceftazidime Oxide Impurity 1 | | |
| Aminothioxime Acetamido Hexanedioic Acid (E)-Impurity | Acetoxy Ceftazidime Dimer | Ceftiofur | Ceftiofur |
| Aminothioxime Acetamido Hexanedioic Acid (Z)-Impurity | Acetoxy Ceftazidime Intermediate | Ceftiofur USP Impurity I |
| Cefotaxime Impurity G Double-Bond Shift | | Ceftiofur USP Impurity J |
| Aminothioxime Isopropyl Acetate | | | |
| Aminothioxime Amide | Cefditoren Pivoxil | Cefditoren Pivoxil | | |
| Cefotaxime Benzo-thioether | Δ3-Cefditoren Pivoxil | Cefotiam | Cefotiam |
| Cefotaxime Dimer C | 7E-Cefditoren Pivoxi | (6R,7S)-Cefotiam |
| Cefotaxime Open-ring Lactone 2 | 3E-Cefditoren Pivoxi | Cefotiam Impurity 12(amino cefotiam, cefotiam amide) |
| Cefotaxime Open-ring Lactone 3 | Cefditoren dual ester | Δ3-amino cefotiam, Δ3-cefotiam amide |
| Cefotaxime Bromoacetyl analogs | Cefditoren Pivoxil Dimer | Cefotiam lactone |
| | Cefditoren Pivoxil Oxide impurity | Cefotiam Oxide Impurity 1 |
| | | Cefditoren Pivoxi Open Ring Impurity | Cefotiam Oxide Impurity 2 |
| Cefotiam Hexetil | Cefotiam Hexetil | Cefditoren Pivoxil Mother Nucleus Double-Bond Shift Isomer | Cefotiam Bilateral chain |
| Cefotiam Hexetil Impurity A1 (JP) | Cefditoren Pivoxil Impurity E | Cefotiam Impurity 9(3-acetoxy-cefotiam ) |
| Cefotiam Hexetil Impurity B4 (JP) | Cefditoren Pivoxil Impurity H | Cefotiam Open Ring Impurity(Cefotiam Impurity 13) |
| Cefotiam Hexetil Impurity C5 (JP) | Cefditoren Pivoxil-d3 | Detetrazole-Cefotiam |
| Cefotiam Hexetil Impurity D6 (JP) | Cefditoren Acid-d3 Sodium Salt | Cefotiam Impurity 1 precursor |
| Cefotiam Hexetil Impurity E7 (JP) | | Cefotiam Impurity 1 |
| Cefotiam Hexetil Impurity F3 (JP) | | | Cefotiam Impurity 3 (7-ADCA Exocyclic Double Bond Impurity) |
| Cefotiam Hexetil Mother Nucleus | Cefditoren Pivoxil | Cefditoren Pivoxil | Cefotiam open-ring decarboxylation lactone |
| | Δ3-Cefditoren Pivoxil | Cefotiam Double nucleus |
| | | 7E-Cefditoren Pivoxi | Cefotiam Dimer P1 |
| Ceftezole | Ceftezole | 3E-Cefditoren Pivoxi | Cefotiam Dimer P3 |
| Ceftezole Impurity M | Cefditoren dual ester | Cefotiam Impurity A |
| Ceftezole Impurity L(Δ3-Ceftezole) | Cefditoren Pivoxil Dimer | Cefotiam Impurity B |
| Ceftezole Oxide Impurity 1 | Cefditoren Pivoxil Oxide impurity | Cefotiam MMT Isomer |
| Ceftezole Oxide Impurity 2 | Cefditoren Pivoxi Open Ring Impurity | Cefotiam MMT-Δ3 Isomer |
| Ceftezole Mother Nucleus | Cefditoren Pivoxil Mother Nucleus Double-Bond Shift Isomer | Cefotiam PRIMP Impurity |
| Ceftezole Double Parents | Cefditoren Pivoxil Impurity E | |
| | Cefditoren Pivoxil Impurity H | | |
| | | Cefditoren Pivoxil-d3 | Cefazedone | Cefazedone |
| Cefoxitin | Cefoxitin | Cefditoren Acid-d3 Sodium Salt | Cefazedone Open ring Impurity |
| Decarbamoylcefoxitin Cefoxitin Impurity A (EP) | | Cefazedone P1A Isomer Imputiry |
| Cefoxitin Impurity B (EP) | | | Cefazedone P1A Isomer Imputiry |
| Cefoxitin Impurity C(EP),Cephalothin Impurity D(EP) | Cefazolin Sodium | Cefazolin Sodium | Cefazedone Lactone |
| Cefoxitin lactone Cefoxitin Impurity D (EP) | Cefazolin EP Impurity A(EP) | Cefazedone Oxide Impurity 2 |
| Cefoxitin Impurity E(EP) | Cefazolin Impurity B (EP) | Cefazedone Oxide Impurity 1 |
| Cefoxitin Impurity F(EP) | Cefazolin Impurity C (EP) | 6R,7S-Cefazedone |
| Cefoxitin Impurity G (EP) | Cefazolin Impurity D(EP),Cefazolin Impurity J(USP) | Δ3- Cefazedone |
| Cefoxitin Impurity H | Cefazolin EP Impurity E(Cefazolin Impurity USP F, MMTD | Δ3-amino Cefazedone |
| Mixture of Cefoxitin Impurity E&F (EP) | Cefazolin Impurity G(EP) | Cefazedone Mother Nucleus Double-Bond Shift Impurity |
| Cefoxitin Oxide Impurity | Cefazoloic Acid Isomers ,Cefazoloic Impurity L (USP),Cefazoloic Impurity I(EP) | Cefazedone Impurity N |
| Cefoxitin Impurity H Precursor(Intermediate of Impurity C) | Cefazolin Impurity K(EP) | |
| Cefoxitin Impurity E1 Isomer(EP) | Cefazolin Epimer Cefazolin Impuirty M (USP), Cefazolin Impurity L (EP) | | |
| Cefoxitin-d3 Sodium Salt | Cefazolin open-ring lactone, Cefazolin Impurity D (USP) | Ceftizoxime | Ceftizoxime |
| Cefoxitin Methyl Ester Oxide Impurity 1 | Cefazoloic Oxide Impurity | Ceftizoxime Open-ring decarboxylation Impurity |
| Cefoxitin Methyl Ester Oxide Impurity 2 | Cefazolin EP Impurity J | Ceftizoxime TSM1 Impurity |
| Cefoxitin Methyl Ester | Cefazolin Impurity B(USP) Precursor | Ceftizoxime TSM2 Impurity |
| Δ3-Cefoxitin Methyl Ester | Cefazolin Impurity E (USP) | Ceftizoxime open ring Impurity 1 |
| Methyl Cefoxitin | Cefazolin-13C2,15N Sodium Salt | Ceftizoxime open ring Impurity 2 |
| Cefoxitin Degradation Imprurity C1 | Cefazolin Double Mother Nucleus Impurity A | △3-Ceftizoxime |
| Cefoxitin Degradation Imprurity C8 | Cefazolin Double Mother Nucleus Impurity B | △3(E)-Ceftizoxime |
| Cefoxitin Amide Impurity | Cefazolin Impurity B(USP) | (6R,7S)-Ceftizoxime |
| △3-Cefoxitin Amide Impurity | Cefazolin Double Mother Nucleus | 7E-Ceftizoxime |
| | Cefazolin Impurity L4L5 | Ceftizoxime oxidation Impurity |
| | | | (E)-Ceftizoxime open ring Impurity 1 |
| Flomoxef sodium | Flomoxef sodium | | | (E)-Ceftizoxime open ring Impurity 2 |
| Detetrazole Flomoxef | Latamoxef Sodium | Latamoxef Sodium | Ceftizoxime Dimer |
| Flomoxef lactone | Latamoxef Nuclear | Ceftizoxime PNCA impurity |
| Δ3-Flomoxef sodium | Latamoxef Nuclear | Ceftizoxime Trans Oxide Impurity 1 |
| Flomoxef Impurity 2 | Latamoxef Impurity 1 | Ceftizoxime Trans Oxide Impurity 2 |
| Flomoxef Impurity 3 | | Ceftizoxime oxidation Impurity |
| Flomoxef Impurity 4 | | | Ceftizoxime Sodium Polymer B |
| Flomoxef Impurity 5 | Cefetamet | Cefetamet | |
| NH2-Flomoxef | Cefetamet Double Mother Nucleus | | |
| Flomoxef Intermediate NaMT | (6R,7S)-Cefetamet | Cefetamet Pivoxil | Cefetamet Pivoxil |
| Flomoxef Intermediate OXA | (E)-Cefetamet | (6R,7S)-Cefetamet Pivoxil |
| Flomoxef Intermediate KDFA | (Δ3)-Cefetamet | Cefetamet Pivoxil Oxide Impurity 1 |
| Flomoxef Intermediate FXMT | Cefetamet Oxide Impurity 1 | Cefetamet Pivoxil Oxide Impurity 2 |
| Flomoxef Intermidate F3-01 | Cefetamet Oxide Impurity 2 | (Δ3)-Cefetamet Pivoxil |
| | Cefetamet Dimer 2 | (7E)-Cefetamet Pivoxil |
| | | | (7E)-Cefetamet Pivoxil Oxide Impurity 1 |
| Cephalosporin C | Cephalosporin C | | | (7E)-Cefetamet Pivoxil Oxide Impurity 2 |
| Cephalosporin C Lactone | 4-Hydroxyphenylglycine | 4-Hydroxyphenylglycine | Cefetamet Pivoxil Open-Ring Impurity |
| Deacetylation Cephalosporin C | N,N-Dimethyl Phenylglycinamide | Cefetamet Pivoxil Impurity B |
| Aminothioxime Cephalosporin C Isomer A | Methyl L-(-)-4-Hydroxyphenylglycinate | Cefetamet Pivoxil Impurity F |
| Aminothioxime Cephalosporin C Isomer B | | Cefetamet Pivoxil Impurity G |
| N,N-Diisopropyl Thiocarbamide Cephalosporin C | | | Cefetamet Pivoxil Impurity F-Δ3 |
| Bromoacetyl Cephalosporin C | Cephacetrile | Cephacetrile | E-Cefetamet Pivoxil Impurity F(Trans Cefetamet Pivoxil Impurity F) |
| | Cephacetrile Oxide Impurity 1 | |
| | | Cephacetrile Oxide Impurity 2 | | |
| | | Δ3-Cephacetrile | | |
| | | Cephacetrile Lactone | | |
| | | Deacetylation Cephacetrile | | |
| | | | | |