| No. | CAS # | Product Names | Molecular Formula |
| 351 | 134523-03-8 | Atorvastatin calcium | (C33H34FN2O5)2.Ca；C66H68CaF2N4O10 |
| 352 | 134523-00-5 | Atorvastatin | C33H35FN2O5 |
| 353 | 95233-18-4 | Atovaquone | C22H19ClO3 |
| 354 | 55290-63-6 | Atractylodin | C13H10O |
| 355 | 64228-81-5 | atracurium besilate | C53H72N2O12.2(C6H5O3S) |
| 356 | 64228-79-1 | Atracurium | C53H72N2O12 |
| 357 | 1912-24-9 | Atrazine | C8H14ClN5 |
| 358 | 492-38-6 | Atropic acid | C9H8O2 |
| 359 | 55-48-1 | Atropine sulfate | 2（C17H23NO3）.H2SO4 |
| 360 | 51-55-8 | Atropine | C17H23NO3 |
| 361 | 000000-00-0 | Automobile paint | |
| 362 | 000000-00-0 | Auxiliaries for coating | |
| 363 | 65195-55-3 | Avermectin B1a | C48H72O14 |
| 364 | 65195-56-4 | Avermectin B1b | C47H70O14 |
| 365 | 123040-16-4 | Azasetron hydrochloride | C17H20ClN3O3.HCl |
| 366 | 123040-69-7 | Azasetron hydrochloride | C17H21Cl2N3O3 |
| 367 | 446-86-6 | Azathioprine | C9H7N7O2S |
| 368 | 123-99-9 | azelaic acid | C9H16O4 |
| 369 | 79307-93-0 | Azelastine hydrochloride | C22H24ClN3O.HCl |
| 370 | 123524-52-7 | Azelnidipine | C33H34N4O6 |
| 371 | 503-29-7 | Azetidine | C3H7N |
| 372 | 120162-55-2 | Azimsulfuron | C13H16N10O5S |
| 373 | 117772-70-0 | Azithromycin dihydrate | C38H72N2O12.2(H2O) |
| 374 | 83905-01-5 | Azithromycin | C38H72N2O12 |
| 375 | 123-77-3 | Azodicarbonamide | C2H4N4O2 |
| 376 | 27165-25-9 | Azoic Diazo Component 1 | C7H6N3O3 |
| 377 | 16047-24-8 | Azoic Diazo Component 34 | C7H6N3O2 |
| 378 | 27589-33-9 | Azosemide | C12H11ClN6O2S2 |
| 379 | 495-48-7 | Azoxybenzene | C12H10N2O |
| 380 | 131860-33-8 | Azoxystrobin | C22H17N3O5 |
| 381 | 78110-38-0 | Aztreonam | C13H17N5O8S2 |
| 382 | 62298-43-5 | Azure-A Eosinate |