Carbidopa,API(Active Pharmaceutical Ingredient) CAS No.: 38821-49-7 Description: white crystalline powder Assay: 98.5~101.0% We obtained the GMP certificate of Carbidopa at January 23 of 2006, the Certificate No. is ZH0292 Seekiing agent for sales in USA or Canada, we will obtain FDA approval on Dec.2006 according to our plan. We can offer high quality Active Pharmaceutical Ingredient with competitive price.