Intended For Use As An Excipient 

• HEPES is a zwitterionic buffer used to maintain pH of media used in cell cultures. It is one of Good’s twelve buffers that has a pKa value similar to its pH value making it an ideal buffer for pH maintenance. It has only one restriction, it interferes with the Folin protein assay. This buffer can form radicals so it is not suitable for redox studies. HEPES is used as a Good’s buffer because it has low UV absorptivity, minimal reactivity, stable pH and is soluble in water. 

General Product Description:

• The manufacturing of HEPES HEPE-3320 is performed at BioSpectra’s Bangor, PA facility utilizing multiuse equipment. Equipment used in the manufacturing of HEPE-3320 is cleaned in accordance with BioSpectra’s Cleaning Validation Plan.
• HEPES is a White Crystalline Product.
• Molecular Formula: C8H18N2O4S
• Molecular Weight: 238.30 g/mol.
• CAS Number: 7365-45-9.
• There are no known major food allergens (as defined by FDA and WHO) in the manufacture of this product.
• BioSpectra certifies that all HEPES HEPE-3320 manufactured at BioSpectra and its raw materials are not derived from
  or come in contact with animal parts, products, and/or byproducts.
• HEPES manufactured at BioSpectra and any raw materials used in the manufacture of HEPES at BioSpectra are not subject to genetic modification.
• Synonyms: N-(2-Hydroxyethyl)piperazine-N’-2-ethanesulfonic acid, 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid.

GMP Compliance:

• Bio Excipient Grade HEPES, HEPE-3220 is suitable for use as an excipient. It is manufactured in accordance with the ICH-Q7 Good Manufacturing Practice Guide. This grade of HEPES is not suitable to be used as an Active Pharmaceutical Ingredient, Drug Product or Household Item.

Retest Date:

• The recommended retest period for HEPES is two years from the date of manufacture.

Storage and Shipping Conditions:

• Ship and Store in ambient temperature.

Package Sizes:

• 10kg, 25kg and 50kg pails.