| API Name | S/N | Chemical Name | Structure | CAS No. | 
| Vilanterol | 1 | Benzene, 2-[[2-[(6-broMohexyl)oxy]ethoxy]Methyl]-1,3-dichloro |  | 503070-57-3 | 
| 2 | (R)-2-amino-1-(2,2-dimethyl-4H-benzo[d][1,3]dioxin-6-yl)ethanol |  | 208925-08-0 | |
| 3 | (5R)-2-Oxazolidinone, 5-(2,2-diMethyl-4H-1,3-benzodioxin-6-yl) |  | 452339-73-0 | |
| 
					Umeclidinium Bromide | 4 | ((2-Bromoethoxy)methyl)benzene |  | 1462-37-9 | 
| 5 | Ethyl quinuclidine-4-carboxylate Hydrochloride |  | 22766-67-2 | |
| 
					Indacaterol | 6 | 5-(2R)-2-Oxiranyl-8-benzyloxy-2(1H)-quinolinone |  | 173140-90-4 | 
| 7 | (R)-8-(Benzyloxy)-5-(2-bromo-1-hydroxyethyl)quinolin-2(1H)-one |  | 530084-79-8 |