This is a partial list of molecules that contain 5 carbon atoms.
| Synonyms | CAS number | |
| C5BrMnO5 | 14516-54-2 | |
| C5BrO5Re | 14220-21-4 | |
| C5Cl2F6O2 | 678-77-3 | |
| C5F6O3 | 376-68-1 | |
| C5F8O2 | 678-78-4 | |
| C5F10 | 376-77-2 | |
| C5F11N | 836-77-1 | |
| C5F13N | 758-48-5 | |
| C5FeO4S | 66517-47-3 | |
| C5FeO5 | 13463-40-6 | |
| C5HMnO5 | 16972-33-1 | |
| C5HN3 | 997-76-2 | |
| C5H2F6O4 | 376-73-8 | |
| C5H3CoF2O4Si | 26024-31-7 | |
| C5H3N3 | 19847-12-2 | |
| C5H4 | 4729-01-5 | |
| C5H4Cl2O2 | 1931-60-8 | |
| C5H4Cl6O3 | 5634-37-7 | |
| C5H4F6N2O2 | 507-68-6 | |
| C5H4N2O | 5780-66-5 | |
| C5H4N2O2 | 98-97-5 | |
| C5H4N2O4 | 65-86-1 | |
| C5H4N4 | 274-87-3 | |
| C5H4N4O | 315-30-0 | |
| C5H4N4O | 68-94-0 | |
| C5H4N4O2 | 69-89-6 | |
| C5H4N4O3 | 69-93-2 | |
| C5H4N4S | 5334-23-6 | |
| C5H4OS | 98-03-3 | |
| C5H4OS | 498-62-4 | |
| C5H4O3 | 26447-28-9 | |
| C5H5 | 542-92-7 | |
| C5H5 | 2143-53-5 | |
| C5H5As | 289-31-6 | |
| C5H5Bi | 289-52-1 | |
| C5H5Co | 61332-89-6 | |
| C5H5F3O2 | 383-67-5 | |
| C5H5N | 110-86-1 | |
| C5H5NOS | 60034-28-8 | |
| C5H5NO2 | 609-38-1 | |
| C5H5NO2 | 137-05-3 | |
| C5H5N3O | pyrazinamide or pyrazine carboxamide | 98-96-4 |
| C5H5N5 | 73-24-5 | |
| C5H5Ni | 61332-95-4 | |
| C5H5P | Phosphorine or phosphabenzene | 289-68-9 |
| C5H5Sb | 289-75-8 | |
| C5H6 | 6746-94-7 | |
| C5H6BrN | 18820-82-1 | |
| C5H6Cl2O2 | 30895-77-3 | |
| C5H6Cl2O2 | 2873-74-7 | |
| C5H6F6NP | 16941-15-4 | |
| C5H6IN | 18820-83-2 | |
| C5H6N2 | 544-13-8 | |
| C5H6N2O2 | 65-71-4 | |
| C5H6O | 534-22-5 | |
| C5H6O | 930-27-8 | |
| C5H6O | 4409-99-8 | |
| C5H6O2 | 623-47-2 | |
| C5H6O4 | 7407-59-2 | |
| C5H6S | 554-14-3 | |
| C5H6S | 616-44-4 | |
| C5H6S2 | 20731-74-2 | |
| C5H6Si | 289-77-0 | |
| C5H7 | 10577-65-8 | |
| C5H7ClO | 5006-22-4 | |
| C5H7ClO2 | 2916-14-5 | |
| C5H7ClO3 | 36239-09-5 | |
| C5H7ClO4 | 28868-76-0 | |
| C5H7Cl3O2 | 3974-99-0 | |
| C5H7F3O2 | 400-38-4 | |
| C5H7N | 4426-11-3 | |
| C5H7N | 4786-19-0 | |
| C5H7NO2 | 1121-89-7 | |
| C5H7NO3 | 98-79-3 | |
| C5H7N3O2 | 551-92-8 | |
| C5H8 | 142-29-0 | |
| C5H8 | 693-86-7 | |
| C5H8 | 18631-83-9 | |
| C5H8 | 157-40-4 | |
| C5H8N4O3S2 | 554-57-4 | |
| C5H8O | 2987-17-9 | |
| C5H8O | 120-92-3 | |
| C5H8O | 628-33-1 | |
| C5H8O2 | 123-54-6 | |
| C5H8O2 | 3721-95-7 | |
| C5H8O2 | 5239-82-7 | |
| C5H8O2 | 111-30-8 | |
| C5H8O2 | 565-63-9 | |
| C5H8O2 | 80-59-1 | |
| C5H8O4 | 601-75-2 | |
| C5H8O4 | 628-51-3 | |
| C5H8O4 | 110-94-1 | |
| C5H8S | 7310-92-1 | |
| C5H9 | 3889-74-5 | |
| C5H9Br | 3017-70-7 | |
| C5H9Cl | 930-28-9 | |
| C5H9ClO | 57526-28-0 | |
| C5H9ClO | 638-29-9 | |
| C5H9ClO | 3003-84-7 | |
| C5H9ClO2 | 105-48-6 | |
| C5H9ClO2 | 5396-24-7 | |
| C5H9ClO2 | 543-27-1 | |
| C5H9F | 1481-36-3 | |
| C5H9FO2 | 500023-96-1 | |
| C5H9N | 590-94-3 | |
| C5H9N | 110-59-8 | |
| C5H9NO | 27154-43-4 | |
| C5H9NO2 | 147-85-3 | |
| C5H9NO2S | 75052-04-9 | |
| C5H9NO2S | 175137-61-8 | |
| C5H9NO3 | 51-35-4 | |
| C5H9NO3S | 616-91-1 | |
| C5H9NS | 591-82-2 | |
| C5H9N3 | 33670-50-7 | |
| C5H9N3 | 105-20-4 | |
| C5H9N3 | 51-45-6 | |
| C5H9O2Tl | 34244-89-8 | |
| C5H10 | 287-92-3 | |
| C5H10 | 1191-96-4 | |
| C5H10 | 1630-94-0 | |
| C5H10 | 930-18-7 | |
| C5H10 | 2402-06-4 | |
| C5H10 | 598-61-8 | |
| C5H10BrF2O3P | 65094-22-6 | |
| C5H10ClNO4 | 138-15-8 | |
| C5H10Cl2O2 | 2209-86-1 | |
| C5H10NO3P | 2942-58-7 | |
| C5H10N2 | 617-83-4 | |
| C5H10N2O2S | 16752-77-5 | |
| C5H10N2O3 | 687-69-4 | |
| C5H10N6O4 | 949-56-4 | |
| C5H10O | 60766-00-9 | |
| C5H10O | 4415-82-1 | |
| C5H10O | 96-41-3 | |
| C5H10O | 2566-44-1 | |
| C5H10O | 765-42-4 | |
| C5H10O | 110-62-3 | |
| C5H10O | 764-47-6 | |
| C5H10OS | 2432-42-0 | |
| C5H10O2 | 62322-45-6 | |
| C5H10O2 | 109-52-4 | |
| C5H10O2 | 75-98-9 | |
| C5H10O2 | 589-40-2 | |
| C5H10O3 | 4835-90-9 | |
| C5H10O3 | 33445-07-7 | |
| C5H10O3S | 86453-13-6 | |
| C5H10O4 | 533-67-5 | |
| C5H10O4 | 26446-35-5 | |
| C5H10O5 (aldopentoses) | 147-81-9 | |
| 10323-20-3 | ||
| 87-72-9 | ||
| 65-42-9 | ||
| 1114-34-7 | ||
| 1949-78-6 | ||
| ribose D-ribose | 50-69-1 | |
| 24259-59-4 | ||
| 25990-60-7 | ||
| 58-86-6 | ||
| 609-06-3 | ||
| C5H10O5 (ketopentoses) | 5556-48-9 | |
| 488-84-6 | ||
| 5962-29-8 | ||
| 527-50-4 | ||
| C5H10O5 | 16528-92-0 | |
| C5H10S | 1795-09-1 | |
| C5H10S | 4740-00-5 | |
| C5H10S | 1679-07-8 | |
| C5H10S | 53971-47-4 | |
| C5H11 | 3744-21-6 | |
| C5H11Br | ||
| C5H11BrO2Si | 18291-80-0 | |
| C5H11ClHg | 17774-08-2 | |
| C5H11ClO4 | 36043-12-6 | |
| C5H11ClSi | 4028-23-3 | |
| C5H11Cl3Si | 107-72-2 | |
| C5H11FO4 | 36043-13-7 | |
| C5H11N | 1003-03-8 | |
| C5H11N | 500011-12-1 | |
| C5H11N | 110-89-4 | |
| C5H11N | 18328-91-1 | |
| Several compounds | – | |
| C5H11NO2 | 110-46-3 | |
| C5H11NO2 | 463-04-7 | |
| C5H11NO2 | 592-35-8 | |
| C5H11NO2 | 543-28-2 | |
| C5H11NO2 | 72-18-4 | |
| C5H11NO2S | 59-51-8 | |
| C5H11NO2S | 52-67-5 | |
| C5H11NO4 | 61478-85-1 | |
| C5H11NS2 | 116072-47-0 | |
| C5H11N2O2P | 77-81-6 | |
| C5H11N3S | 73373-48-5 | |
| C5H11O2 | 52310-21-1 | |
| C5H11O3P | 757-54-0 | |
| C5H11O5P | 5927-18-4 | |
| C5H11P | 4743-40-2 | |
| C5H12 | 109-66-0 | |
| C5H12ClO2PS2 | 24934-91-6 | |
| C5H12Cl2Si | 18147-18-7 | |
| C5H12FO2P | 352-63-6 | |
| C5H12FO2P | 1189-87-3 | |
| C5H12FO2P | 2992-95-2 | |
| C5H12NO3PS2 | 60-51-5 | |
| C5H12NO4PS | 1113-02-6 | |
| C5H12N2 | 4426-46-4 | |
| C5H12N2 | 505-66-8 | |
| C5H12N2O | 38291-82-6 | |
| C5H12N3OP | 14445-60-4 | |
| C5H12O | 625-44-5 | |
| C5H12O2 | 462-95-3 | |
| C5H12O2Si | 13411-48-8 | |
| C5H12O3Si | 2768-02-7 | |
| C5H12O4 | 1850-14-2 | |
| C5H12O5 | 488-81-3 | |
| C5H12O5 | 87-99-0 | |
| C5H13BO | 7397-46-8 | |
| C5H13ClSi | 17477-29-1 | |
| C5H13N | 5813-64-9 | |
| C5H13NO2 | 105-59-9 | |
| C5H13NO4 | 36043-15-9 | |
| C5H13O2PS | 6996-81-2 | |
| C5H13O3P | 683-08-9 | |
| C5H13O3P | 690-64-2 | |
| C5H13O4P | 3084-40-0 | |
| C5H14Cl2N2O2 | 6211-16-1 | |
| C5H14NO6P | 58823-88-4 | |
| C5H14N2 | 50599-41-2 | |
| C5H14N2O4 | 36043-16-0 | |
| C5H14O2Si | 2031-62-1 | |
| C5H14O3Si | 5314-55-6 | |
| C5H14O6P2 | 16001-93-7 | |
| C5H15As5 | 20550-47-4 | |
| C5H15N2OP | 2511-17-3 | |
| C5H15Sb | 15120-50-0 | |
| C5H15Ta | 53378-72-6 | |
| C5H16Cl4MnN2 | 59890-70-9 | |
| C5H30Bi2Br11N5 | 119931-90-7 | |
| C5N4 | 24331-09-7 | |