| 1 | 543-15-7 | Heptaminol hydrochloride | C8H20ClNO | 181.7 | 165-167°C(lit.) | |
| 2 | 543-17-9 | Ethanaminium, N,N,N-trimethyl-2-(nitrooxy)-, hydroxide (1:1) | C5H14N2O4 | 166.18 | | |
| 3 | 543-18-0 | Guanidinoethyl Sulfonate | C3H9N3O3S | 167.19 | 263-265°C | |
| 4 | 543-20-4 | Succinyl chloride | C4H4Cl2O2 | 154.98 | 16 °C | Reacts violently with water. |
| 5 | 543-21-5 | but-2-ynediamide | C4H4N2O2 | 112.09 | 179 °C | |
| 6 | 543-24-8 | N-Acetylglycine | C4H7NO3 | 117.1 | 207-209 °C (lit.) | 2.7 g/100 mL (15 ºC) |
| 7 | 543-27-1 | Isobutyl chloroformate | C5H9ClO2 | 136.58 | -80°C | Immiscible with water. |
| 8 | 543-28-2 | isobutyl carbamate | C5H11NO2 | 117.15 | 67°; also stated at 61° | 58.57g/L(37 ºC) |
| 9 | 543-29-3 | ISOBUTYL NITRATE | C4H9NO3 | 119.12 | -111.59°C (estimate) | |
| 10 | 543-38-4 | L-Canavanine | C12H20Br2N4O3 | 428.12 | | |
| 11 | 543-39-5 | 7-OCTEN-2-OL, 2-METHYL-6-METHYLENE | C10H18O | 154.25 | | |
| 12 | 543-44-2 | 2,4,8,10-Dodecatetraenamide, N-(2-methylpropyl)-, (2E,4E,8E,10E)- | C16H25NO | 247.38 | | |
| 13 | 543-49-7 | 2-heptanol | C7H16O | 116.2 | -30.15°C | 0.35 g/100 mL |
| 14 | 543-50-0 | Thiocyanic acid 3-methylbutyl ester | C6H11NS | 129.22 | | |
| 15 | 543-54-4 | PYRIDINE SULFATE | C10H12N2O4S | 256.28 | 93 °C | |
| 16 | 543-59-9 | 1-Chloropentane | C5H11Cl | 106.59 | -60 °C | practically insoluble |
| 17 | 543-63-5 | N-BUTYLMERCURIC CHLORIDE | C4H9ClHg | 293.16 | 130° | |
| 18 | 543-67-9 | N-PROPYL NITRITE | C3H7NO2 | 89.09 | | |
| 19 | 543-71-5 | Penthiazole | C4H9NS | 103.19 | | |
| 20 | 543-75-9 | 2,3-Dihydro-1,4-Dioxin | C4H6O2 | 86.09 | | |
| 21 | 543-80-6 | Barium acetate | C4H6BaO4 | 255.42 | 450°C | soluble |
| 22 | 543-81-7 | BERYLLIUM ACETATE, BASIC | C4H6BeO4 | 127.100222 | 60°C (rough estimate) | soluble hot H2O, with hydrolysis; insoluble alcohol [MER06] |
| 23 | 543-82-8 | Octodrine | C7H17N | 115.22 | 25°C | |
| 24 | 543-83-9 | galegine | C6H13N3 | 127.19 | 60-65° | |
| 25 | 543-86-2 | Isoamyl carbamate | C6H13NO2 | 131.17 | 64-66℃ | 4.801g/L(15.5 ºC) |
| 26 | 543-87-3 | iso-Pentyl Nitrate | C5H11NO3 | 133.15 | -61.6°C (estimate) | Slightly soluble in water |
| 27 | 543-88-4 | Carbamic acid, calcium salt (2:1) | CH5CaNO2 | 103.13 | | |
| 28 | 543-90-8 | Cadmium acetate | C4H6CdO4 | 230.5 | 255°C | soluble H2O, alcohol [HAW93] |
| 29 | 543-94-2 | Strontium acetate | C4H6O4Sr | 205.71 | 150°C -0.5H₂O | soluble in 2.5 parts H2O; slightly soluble alcohol [MER06] |
| 30 | 543-99-7 | diisopentylammonium chloride | C10H24ClN | 193.75726 | | |