6B1O:
reference: A comparative study of the binding properties, dipeptidyl peptidase-4 (DPP-4) inhibitory activity and glucose-lowering efficacy of the DPP-4 inhibitors alogliptin, linagliptin, saxagliptin, sitagliptin and vildagliptin in mice., Berger JP, SinhaRoy R, Pocai A, Kelly TM, Scapin G, Gao YD, Pryor KAD, Wu JK, Eiermann GJ, Xu SS, Zhang X, Tatosian DA, Weber AE, Thornberry NA, Carr RD, Endocrinol Diabetes Metab. 2017 Nov 24;1(1):e00002. doi: 10.1002/edm2.2., eCollection 2018 Jan. PMID: 30815539

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