CAS 1739-84-0

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  • Cheap PriceList for Potassium Tert-butoxide (KTB) - Tris(hydroxymethyl)aminomethane – Freemen

    Cheap PriceList for Potassium Tert-butoxide (KTB) - Tris(hydroxymethyl)aminomethane – Freemen

    Appearance: white crystasl powder Purity (Titration): 99.5%min Water: 0.5%max [Fe3+]:5ppm max [SO4 2 ]:10ppm max [Cl]:10ppm max Heavy metal: 5ppm max 25kg/drum, 9Mt/FCL Non-hazardous material ☑ Tris buffer is not only widely used as a solvent for nucleic acids and proteins, but also has many important uses. Tris was used for protein crystal growth under different pH conditions. ☑ The low ionic strength of Tris buffer can be used to form the intermediate fiber of lamin in C. elegans. ☑ T...
  • Chinese Professional Supply chain management - 1,4,7,10-tetraazacyclododecane – Freemen

    Chinese Professional Supply chain management - 1,4,7,10-tetraazacyclododecane – Freemen

    Appearance: White to almost white crystalline, hygroscopic Purity (Titration): 99.0%min Water: 1.0%max Toluene: 0.2%max unknown impurity: 0.05%max Total impurity: 0.2%max PH value:11-12.5 25kg/drum, 9Mt/FCL Non-hazardous material ☑ It used in pharmaceuticals. ☑ Cyclen and its derivatives exhibit selective coordination properties for transition metal cations, heavy metal cations, lanthanide and actinide ions, and even for organic or inorganic anions. The accurate behavior of cyclen and...
  • Wholesale Price China 2-Methyl-Terahydrofuran - Crotonic Acid – Freemen

    Wholesale Price China 2-Methyl-Terahydrofuran - Crotonic Acid – Freemen

    Appearance  Colorless to beige cystalline product Purity (GC)  99.0%min Water  0.2%max Iron  3ppm max Other single heavey metals  1ppm max 100kg/Fiber drum, 16Mt/FCL UN No.2823, Class:8, Packing group:III ☑ It used across industry, personal care industry, resin industry as additive, Flavor & fragrance industry. ☑ In pharmaceutical industry, It is used for synthesis of (R)-3-Aminobutanol for anti-HIV API Dolutegravir and intermediates for other API, such as Crot...
  • Manufacturer for Medicine - Acetonitrile – Freemen

    Manufacturer for Medicine - Acetonitrile – Freemen

    Appearance: Transparent liquid Purity: 99.9%min Water: 0.03%max Color (Pt-Co): 10 max Hydrocyanic Acid(mg/kg):10max Ammonia (mg/kg):6max Acetone (mg/kg): 25max Acrylonitrile (mg/kg): 25max Propionitrile (mg/kg): 500max Fe(mg/kg): 0.50max Cu (mg/kg): 0.05max 150kg/drum, 12Mt/FCL or 20mt/FCL UN No.1648, Class:3, Packing group:II ☑Chemical analysis and instrumental analysis. Acetonitrile is an organic modifier and solvent for thin layer chromatography, paper chromatography, spectroscopic a...
  • OEM/ODM Manufacturer CAS 107-93-7 - Crotonic Acid – Freemen

    OEM/ODM Manufacturer CAS 107-93-7 - Crotonic Acid – Freemen

    Appearance  Colorless to beige cystalline product Purity (GC)  99.0%min Water  0.2%max Iron  3ppm max Other single heavey metals  1ppm max 100kg/Fiber drum, 16Mt/FCL UN No.2823, Class:8, Packing group:III ☑ It used across industry, personal care industry, resin industry as additive, Flavor & fragrance industry. ☑ In pharmaceutical industry, It is used for synthesis of (R)-3-Aminobutanol for anti-HIV API Dolutegravir and intermediates for other API, such as Crot...
  • One of Hottest for CAS 865-48-5 - 1-Methylimidazole – Freemen

    One of Hottest for CAS 865-48-5 - 1-Methylimidazole – Freemen

    ☑Intermediates for organic synthesis; ☑ Polyurethane catalyst for semi-rigid foam and rigid foam; ☑ Accelerator for dicyandiamide or anhydride curing agent; ☑Dialkylimidazolium salt can be obtained by alkylation of 1-Methylimidazole. The type of salt is related to alkylation reagent and anion. Many ionic liquids can be obtained by this reaction; ☑N-methylimidazole is an important raw material for the synthesis of pharmaceutical intermediates, which is used to prepare losartan, nitazofenone an...
  • Cheapest Price CAS 5466-77-3 - Fluoro-aceticacimethylester – Freemen

    Cheapest Price CAS 5466-77-3 - Fluoro-aceticacimethylester – Freemen

    ☑200kg/ drum, 16mt/FCL or ISO tank ☑UN No.2929, Class:6.1, Packing group:I ☑ Methyl fluoroacetate is a highly toxic chemical, which can stimulate eyes, respiratory system and skin, and it is dangerous to contact with the accident. FLUOROACETIC acid is flammable and can produce hydrogen fluoride gas, a toxic chemical, when burned. The toxicity of methyl fluoroacetate is that it hydrolyzes to form FLUOROACETIC acid, which combines with the coenzyme A of cell mitochondria to form fluoroacetyl CO...
  • Factory Price CAS 24424-99-5 - 1,2-Dimethylimidazole – Freemen

    Factory Price CAS 24424-99-5 - 1,2-Dimethylimidazole – Freemen

    ☑ Catalyst in polyurethane, applied in polyurethane rigid foam and elastomer to extend the pot life, fasten the reaction and increase the final cross-lin density. ☑It can be used as curing agent of epoxy resin, improve the mechanical properties of products such as bending, stretching and compression, improve the electrical properties of insulation and chemical resistance. It is widely used in computers and electrical appliances; it is used in printed circuit boards and integrated circuits as ...
  • Chinese wholesale Analgesic - Acetonitrile – Freemen

    Chinese wholesale Analgesic - Acetonitrile – Freemen

    Appearance: Transparent liquid Purity: 99.9%min Water: 0.03%max Color (Pt-Co): 10 max Hydrocyanic Acid(mg/kg):10max Ammonia (mg/kg):6max Acetone (mg/kg): 25max Acrylonitrile (mg/kg): 25max Propionitrile (mg/kg): 500max Fe(mg/kg): 0.50max Cu (mg/kg): 0.05max 150kg/drum, 12Mt/FCL or 20mt/FCL UN No.1648, Class:3, Packing group:II ☑Chemical analysis and instrumental analysis. Acetonitrile is an organic modifier and solvent for thin layer chromatography, paper chromatography, spectroscopic a...
  • Factory Price CAS 24424-99-5 - Crotonic Acid – Freemen

    Factory Price CAS 24424-99-5 - Crotonic Acid – Freemen

    Appearance  Colorless to beige cystalline product Purity (GC)  99.0%min Water  0.2%max Iron  3ppm max Other single heavey metals  1ppm max 100kg/Fiber drum, 16Mt/FCL UN No.2823, Class:8, Packing group:III ☑ It used across industry, personal care industry, resin industry as additive, Flavor & fragrance industry. ☑ In pharmaceutical industry, It is used for synthesis of (R)-3-Aminobutanol for anti-HIV API Dolutegravir and intermediates for other API, such as Crot...
  • OEM/ODM Supplier N-(9-Fluorenylmethoxy Cabonyloxy)Succinimide(Fmoc-Osu) - 1-Methylimidazole – Freemen

    OEM/ODM Supplier N-(9-Fluorenylmethoxy Cabonyloxy)Succinimide(Fmoc-Osu) - 1-Methylimidazole – Freemen

    ☑Intermediates for organic synthesis; ☑ Polyurethane catalyst for semi-rigid foam and rigid foam; ☑ Accelerator for dicyandiamide or anhydride curing agent; ☑Dialkylimidazolium salt can be obtained by alkylation of 1-Methylimidazole. The type of salt is related to alkylation reagent and anion. Many ionic liquids can be obtained by this reaction; ☑N-methylimidazole is an important raw material for the synthesis of pharmaceutical intermediates, which is used to prepare losartan, nitazofenone an...
  • China Cheap price 1-Methylimidazole - Tris(hydroxymethyl)aminomethane – Freemen

    China Cheap price 1-Methylimidazole - Tris(hydroxymethyl)aminomethane – Freemen

    Appearance: white crystasl powder Purity (Titration): 99.5%min Water: 0.5%max [Fe3+]:5ppm max [SO4 2 ]:10ppm max [Cl]:10ppm max Heavy metal: 5ppm max 25kg/drum, 9Mt/FCL Non-hazardous material ☑ Tris buffer is not only widely used as a solvent for nucleic acids and proteins, but also has many important uses. Tris was used for protein crystal growth under different pH conditions. ☑ The low ionic strength of Tris buffer can be used to form the intermediate fiber of lamin in C. elegans. ☑ T...

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