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          Product name CAS.No. Appearance
          1 Piperazine anhydrous 110-85-0 Colorless crystal with saline taste and ammonia odor.
          2 Piperazine hexahydrate 142-63-2 Light yellow or white crystal
          3 Piperazine hydrate (1:1) -- White crystal
          4 Piperazine Citrate 144-29-6 White crystalline powder
          5 Folic acid 59-30-3 Yellow or orange-yellow crystalline powder.
          6 1,4-Diazabicyclo[2.2.2]octane 280-57-9 --
          7 2,4,5-trifluorophenyl acetic acid 209995-38-0 --
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