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                    Tetrahedron Building Blocks                
                             | 
            
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                SDF
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                    Fluorochem                
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                    Molport BB                
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                SDF
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                    Sigma Aldrich (Building Blocks)                
                             | 
            
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                    Chembo Pharma                
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                    Molport                
                             | 
            
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                    Active BioPharma                
                             | 
            
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                    Sequoia Research Products                
                             | 
            
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                SDF
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                    Ryan Scientific BB                
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                SDF
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                Flexibase
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                    Combi-Blocks                
                             | 
            
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                    Bide Pharmatech BB                
                             | 
            
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                SDF
                MOL2
                Flexibase
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                    eMolecules                
                             | 
            
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                    Ark Pharm Building Blocks                
                             | 
            
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                    Toronto Research Chemicals                
                             | 
            
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                    TCI                
                             | 
            
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                    TimTec                
                             | 
            
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                    BOC Sciences BB                
                             | 
            
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                    Tractus                
                             | 
            
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                    Apollo Scientific Bioactives                
                             | 
            
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                    Bosche Scientific                
                             | 
            
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             | 
        
        
            
                
                     
                
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                    Zylexa Pharma BB                
                             | 
            
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             | 
        
        
            
                
                     
                
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                    Prestwick Chemical                
                             | 
            
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                    AKOS                
                             | 
            
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                    Selleck Chemicals                
                             | 
            
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             | 
        
        
            
                
                     
                
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                    Anward                
                             | 
            
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                    Cayman Chemical                
                             | 
            
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             | 
        
        
            
                
                     
                
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                    MicroSource US Drugs                
                             | 
            
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                    Acros Organics                
                             | 
            
                1             | 
                        
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                SDF
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                Flexibase
             | 
        
        
            
                
                     
                
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                    Boerchem Pharmatech BB                
                             | 
            
                1             | 
                        
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                SDF
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                Flexibase
             | 
        
        
            
                
                     
                
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                    BePharm Building Blocks                
                             | 
            
                1             | 
                        
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                SDF
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             | 
        
        
            
                
                     
                
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                    AK Scientific                
                             | 
            
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                SDF
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             | 
        
        
            
                
                     
                
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                    TimTec Building Blocks                
                             | 
            
                1             | 
                        
                Overview
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             | 
            
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                SDF
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                Flexibase
             | 
        
        
            
                
                     
                
             | 
            
                
                    MicroSource Pharmakon                
                             | 
            
                1             | 
                        
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             | 
            
                SMILES
                SDF
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             | 
        
        
            
                
                     
                
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                    BioSynth                
                             | 
            
                1             | 
                        
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             | 
        
        
            
                
                     
                
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                    ChemMol                
                             | 
            
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             | 
        
        
            
                
                     
                
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                    Ryan Scientific                
                             | 
            
                1             | 
                        
                Overview
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             | 
            
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             | 
        
        
            
                
                     
                
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                    J&K Chemical                
                             | 
            
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             | 
            
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             | 
        
        
            
                
                     
                
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                    APIChem                
                             | 
            
                1             | 
                        
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