The intervet/schering-plough merger was relatively recent, so you probably won't find some info on the website (re older products). Actually, I just checked and Solo-jec is a product of Boehringer Ingelheim, not Schering-Plough.
solo-jec 7 is a vaccine available from catalog companies (Dist/Adeno/Parainflu/Parvo/Lepto)
Boehringer Ingelheim Product Detail: Solo-Jec® 5 Plus™ Boehringer Ingelheim Product Detail: Solo-Jec® 7 Plus™