Alfa Aesar: where science meets service

With Alfa Aesar now a part of Thermo Fisher Scientific, we are well on our way to becoming your one-stop source for chemicals, metals and materials, and life science products for all your research and development applications. For more than 50 years, scientists have relied on Alfa Aesar as a service-oriented chemicals supplier.  Register and order online - over 38,000 products in stock, in multiple sizes and purity levels, including novel organics and organometallics, precious metal compounds and catalysts, biochemical reagents, and performance materials for electronics and nanotechnology.

Our in-house manufacturing capabilities and extensive technical expertise enable us to offer custom solutions to meet your product specifications, from gram to ton quantities, and from R&D to full-scale production. 

Our product portfolio has expanded to include Thermo Scientific biochemicals (formerly Affymetrix-USB chemicals and biochemical reagents) such as ultrapure buffers, substrates, and additives. The catalog numbers for these products are prefixed with a "J", e.g., J11590 instead of 11590.) Reagents for molecular biology and cell culture applications are available directly from

Product areas available:

Browse the above product areas or use our Advanced Search to find products by:

  • Product Number or Name
  • CAS Registry Number
  • MDL
  • Document
  • Element
  • Molecular Structure

Find your product by doing a structure search.

We offer expertise in producing and sourcing a substantial range of products for your research, pilot-scale, or production application. Whether it is a specialty metal product, such as a custom metal fabrication, or a shipment of bulk or semi-bulk chemicals, you will find Alfa Aesar to be the supplier of choice. Many thousands of chemicals and materials can be promptly delivered directly from stock. Learn more ?

Ordering information

You can register and log in on to order products directly from the website. If you are NOT able to register or log in, please contact us:

To order, you can either:

  • Use our Quick Order Entry form (if you know the product details), OR
  • Navigate to a product family page (e.g., Organics > Alcohols) and click on a product number that will take you to the standard order entry page.
    If you need more information about the product you are ordering, click the Technical Inquiry button on the product detail page.

Contact us: 2 Radcliff Rd Tewksbury, MA 01876 USA
Tel:  1-978-521-6300  
Fax: 1-978-521-6350

Technical Service
Tel: 1-800-343-7276 or 1-978-521-6405 (M-F, 8AM-5PM EST)
Fax: 1-978-521-6350

Catalog Sales & Customer Service
Tel: 1-800-343-0660 or 1-978-521-6300 (M-F, 8AM-7PM EST)
Fax: 1-800-322-4757
or 1-978-521-6350

Specialty/Bulk Sales
1-888-343-8025 / 1-978-521-6401 (M-F: 8A.M. - 5P.M. EST) 
Fax: 1-978-521-6366