Yoshizaki S, Tanimura K, Tamada S, Yabuuchi Y, Nakagawa K (September 1976). "Sympathomimetic amines having a carbostyril nucleus". Journal of Medicinal Chemistry. 19 (9): 1138–42. doi:10.1021/jm00231a011. PMID10441.
Yoshizaki S, Manabe Y, Tamada S, Nakagawa K, Tei S (August 1977). "Isomers of erythro-5-(1-hydroxy-2-isopropylaminobutyl)-8-hydroxycarbostyril, a new bronchodilator". Journal of Medicinal Chemistry. 20 (8): 1103–4. doi:10.1021/jm00218a024. PMID894683.
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US 4616022, Ghebre-sellassie I, Nesbitt Jr RU, "Procaterol stabilization", published 1984, issued 1986, assigned to Warner Lambert Co LLC
Yoshizaki S, Tanimura K, Tamada S, Yabuuchi Y, Nakagawa K (September 1976). "Sympathomimetic amines having a carbostyril nucleus". Journal of Medicinal Chemistry. 19 (9): 1138–42. doi:10.1021/jm00231a011. PMID10441.
Yoshizaki S, Manabe Y, Tamada S, Nakagawa K, Tei S (August 1977). "Isomers of erythro-5-(1-hydroxy-2-isopropylaminobutyl)-8-hydroxycarbostyril, a new bronchodilator". Journal of Medicinal Chemistry. 20 (8): 1103–4. doi:10.1021/jm00218a024. PMID894683.