In a composition of matter aspect, {HEAD ~ the invention} resides in 5 PY 6 Q pyridin 2 amines or {TAIL ~ pharmaceutically acceptable acid addition salts} thereof, which are useful as cardiotonic agents, where PY and Q are defined hereinbelow 
resides in
In a composition of matter aspect , { HEAD ~ the invention } resides in 5 PY 6 Q pyridin 2 amines or { TAIL ~ pharmaceutically acceptable acid addition salts } thereof , which are useful as cardiotonic agents , where PY and Q are defined hereinbelow
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH