Protheragen | Address: 101-4 Colin Dr, Holbrook, New York 11741, USA 
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 Alfa Chemistry | Address: Colin Dr, Holbrook, New York 11741, USA 
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 LGC Standards / Toronto Research Chemicals | Address: 10 Priestley Road, Guildford, Surrey GU2 7XY, United Kingdom 
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LGC Standards / Toronto Research Chemicals was founded in 1982 to manufacture and supply researchers in the biomedical fields with specialized complex organic small molecules not otherwise commerciall more...