The invention provides novel inhibitors of ROCK1 and/or ROCK2. Also provided are methods of treating diseases and disorders involving inhibiting ROCK1 and/or ROCK2. The present invention includes pharmaceutical compositions comprising the compounds of the invention and a pharmaceutically acceptable carrier and/or diluents. The present invention includes compositions comprising a substantially pure compound of the invention and a pharmaceutically acceptable salt, steroisomer, or hydrate thereof: and a pharmaceutically acceptable excipient and/or diluents.