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