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Hello.
Does any testing laboratory offers high pressure liquid chromotography-mass spectrometry or gas chromatography-mass spectrometry? I am interested in compound identification and quantitative analysis of impurities of small molecules (< 1 000 Da).
Hello. What are the vendors who sells an estradiol ester and cyproterone acetate in raw powder form? I only found one vendor after searching (Purple Panda Labs); I want to compare prices and choose the “best” overall (price and known quality of products). Thanks.