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Riboflavine (vitamin B2)
Catalog Number:
(97062-302)
Supplier:
THERMO FISHER SCIENTIFIC CHEMICALS
Description:
Riboflavine (vitamin B2) 98%
Supplier:
MP Biomedicals
Description:
A vitamin/enzyme cofactor found in milk, eggs, malted barley, liver, kidney, heart, leafy vegetables. Richest natural source is yeast. Occurs in the free form only in the retina of the eye, in whey, and in urine; bioactive forms occurring in tissues and cells are riboflavin monophosphate and flavine-adenine dinucleotide.
Used as a photoinitiator for polymerization of polyacrylamide gels. It forms free radicals in aqueous solution in the presence of light. Riboflavin photodecomposes to leucoflavin. No free radicals are formed in the absence of oxygen but traces of oxygen allows for leucoflavin to reoxidize with free-radical generation. The catalysts TEMED or DMAPN are commonly added to speed up the free radical formation. The free radicals will cause acrylamide and bis-acrylamide to polymerize to form a gel matrix which can be used for electrophoresis. Riboflavin is commonly used in the stacking gel for non-denaturing polyacrylamide electrophoresis because native proteins can be senstive to persulfate ions from ammonium persulfate. Another advantage of riboflavin over ammonium persulfate is that it will not start polymerization until the gel is illuminated.
Riboflavin causes less denaturing than other initiators. Gel strength can be improved when used with PTO (Pyrithione). Soluble in 0.1 M Sodium Hydroxide (50 mg/ml - clear, yellowish-orange solution); only slightly soluble in water.
Catalog Number:
(TCR0020-100G)
Supplier:
TCI America
Description:
CAS Number: 83-88-5
MDL Number: MFCD00005022 Molecular Formula: C17H20N4O6 Molecular Weight: 376.37 Form: Crystal Color: Yellow Specific rotation [a]20/D: -135 deg (C=0.5, JP Method)
Supplier:
Thermo Scientific Chemicals
Description:
Photoinitiator of polymerization for PAGE gels
Supplier:
Spectrum Chemicals
Description:
Riboflavin, USP is also referred to as vitamin B2 and used as a dietary supplement.
Supplier:
RPI
Description:
Riboflavine (vitamin B2)
Supplier:
BeanTown Chemical
Description:
CAS: 83-88-5; EC No: 201-507-1; MDL No: MFCD00005022
Powder; Molecular Formula: C17H20N4O6; MW: 376.37
Melting Point: 290° (decomposes)
Supplier:
Spectrum Chemicals
Description:
Riboflavin, FCC is also referred to as vitamin B2 and used as a dietary supplement. The FCC grade meets the requirements of the Food Chemical Codex indicates and is suitable for all food, beverage and nutritional supplement applications. Spectrum Chemical offers over 300 Food grade chemical ingredients packaged in laboratory size bottles to production drum quantities and are manufactured, packaged and stored under current Good Manufacturing Practices (cGMP) per 21CFR part 211 in FDA registered and inspected facilities.
Catalog Number:
(80109-776)
Supplier:
MilliporeSigma
Description:
A water soluble vitamin involved in the synthesis of flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD). Provides protection against oxidative damage.
Catalog Number:
(AAJ66632-14)
Supplier:
AMBEED, INC
Description:
Riboflavine (vitamin B2) 98%
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 is still displayed and you need assistance, please call us at 1-800-932-5000.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the
is still displayed and you need assistance, please call us at 1-800-932-5000.
This product is marked as restricted and can only be purchased by approved Shipping Accounts. If you need further assistance, email VWR Regulatory Department at Regulatory_Affairs@vwr.com
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