Greater Draenic Intellect Flask

To make a stack of 20, you need:
20 x Alchemical Catalyst
4 x Sorcerous Fire
20 x Draenic Intellect Flask

Which, broken down into raw materials, means you need:
20 x Alchemical Catalyst
4 x Sorcerous Fire
20 x Crystal Vial
80 x Starflower
80 x Talador Orchid

Don't forget about trading in stockpiles of [item=120945] to get the Alchemical Catalyst and send to your Alchemist guildies. These can be bought at your local Garrison Primal Trader - [npc=84967] for Horde.