Ethylamine → (1-{9-[(4s,2r,3r,5r)-3,4-Dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-6-aminopurin-2-yl}pyrazol-4-yl)-n-ethylcarboxamide

Participants

Role	Name	HCID	Charge
Reactant	Ethylamine	HCID 6341	—
Reactant	Regadenoson	HCID 219024	—
Product	(1-{9-[(4s,2r,3r,5r)-3,4-Dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-6-aminopurin-2-yl}pyrazol-4-yl)-n-ethylcarboxamide	HCID 9865924	—

Compound 19 was prepared in a manner similar to that of compound 16 using ethylamine instead of methylamine, MS 405.35 (M+1).