| No. | CAS # | Product Names | Molecular Formula |
| 201 | 2114-02-5 | Amidinothiourea | C2H6N4S |
| 202 | 120923-37-7 | Amidosulfuron | C9H15N5O7S2 |
| 203 | 20537-88-6 | Amifostine | C5H15N2O3PS |
| 204 | 17440-83-4 | Amiloride hydrochloride dihydrate | C6H8ClN7O.HCl.2H2O |
| 205 | 2016-88-8 | Amiloride hydrochloride | C6H8ClN7O.HCl |
| 206 | 68814-69-7 | Amines, dimethyltallow alkyl | |
| 207 | 000000-00-0 | Amino resin paint | |
| 208 | 000000-00-0 | Amino-modified silicone oil | |
| 209 | 6011-14-9 | Aminoacetonitrile hydrochloride | C2H4N2.HCl;C2H5ClN2 |
| 210 | 5466-22-8 | Aminoacetonitrile sulfate | 2(C2H4N2).H2SO4 |
| 211 | 2582-30-1 | Aminoguanidine bicarbonate | CH6N4.H2CO3;C2H8N4O3 |
| 212 | 1068-42-4 | Aminoguanidinium sulphate | CH6N4.H2SO4 |
| 213 | 2516-47-4 | Aminomethylcyclopropane | C4H9N |
| 214 | 317-34-0 | Aminophylline | 2(C7H8N4O2).C2H8N2 |
| 215 | 19774-82-4 | Amiodarone hydrochloride | C25H29I2NO3.HCl；C25H30ClI2NO3 |
| 216 | 1951-25-3 | Amiodarone | C25H29I2NO3 |
| 217 | 549-18-8 | Amitriptyline hydrochloride | C20H23N.HCl |
| 218 | 50-48-6 | Amitriptyline | C20H23N |
| 219 | 111470-99-6 | Amlodipine besilate | C20H25ClN2O5.C6H6O3S |
| 220 | 88150-47-4 | Amlodipine maleate | C20H25ClN2O5.C4H4O4;C24H29ClN2O9 |
| 221 | 88150-42-9 | Amlodipine | C20H25ClN2O5 |
| 222 | 1336-21-6 | ammonia, aqueous solution | NH4OH |
| 223 | 55870-50-3 | Ammonium (-)-3-bromo-8-camphorsulfonate | C10H18BrNO4S |
| 224 | 19402-64-3 | Ammonium benzenesulfonate | C6H9NO3S |
| 225 | 1863-63-4 | Ammonium benzoate | C7H9NO2 |
| 226 | 12124-97-9 | Ammonium bromide | |
| 227 | 15245-12-2 | Ammonium calcium nitrate | 5Ca(NO3)2 ‧；NH4·NO3‧；10H2O |
| 228 | 12125-02-9 | Ammonium chloride | NH4Cl |
| 229 | 16919-58-7 | Ammonium chloroplatinate | |
| 230 | 3012-65-5 | Ammonium citrate dibasic | C6H14N2O7 |
| 231 | 513-74-6 | Ammonium dithiocarbamate | NH4.CH2NS2 |
| 232 | 1185-57-5 | Ammonium ferric citrate | FeC6H5O7.NH4OH；C6H10FeNO8 |
| 233 | 12125-01-8 | Ammonium fluoride | NH4F |
| 234 | 540-69-2 | Ammonium formate | CH5NO2 |
| 235 | 94232-38-9 | Ammonium gold sulphite | Au3.(NH4).(SO3)2 |
| 236 | 16940-92-4 | Ammonium hexachloroiridate(IV) | |
| 237 | 19168-23-1 | Ammonium hexachloropalladate(IV) | |
| 238 | 15336-18-2 | Ammonium hexachlororhodate(III) | |
| 239 | 7784-19-2 | Ammonium hexafluoroaluminate | |
| 240 | 16941-11-0 | Ammonium hexafluorophosphate | NH4PF6 |
| 241 | 16919-19-0 | Ammonium hexafluorosilicate | （NH4）2SiF6 |
| 242 | 16919-31-6 | Ammonium hexafluorozirconate | （NH4）2.ZrF6 |
| 243 | 1066-33-7 | ammonium hydrogencarbonate | NH4HCO3 |
| 244 | 1341-49-7 | Ammonium hydrogendifluoride | NH4HF2 |
| 245 | 10192-30-0 | ammonium hydrogensulphite | NH4.HSO3 |
| 246 | 515-98-0 | Ammonium lactate | C3H6O3.H3N |
| 247 | 32612-48-9 | Ammonium lauryl ether sulfate | C12H25O.(C2H4O)2.SO3.NH4 |
| 248 | 2235-54-3 | Ammonium lauryl sulfate | C12H25O4S.NH4 |
| 249 | 7803-55-6 | Ammonium metavanadate | NH4VO3 |
| 250 | 12054-85-2 | Ammonium molybdate tetrahydrate | Mo7O24.6(NH4).4(H2O) |