R9504 Sigma-Aldrich


BioReagent, suitable for cell culture, suitable for insect cell culture, ≥98%

Synonym: Lactoflavin, Vitamin B2, Vitamin G

  • CAS Number 83-88-5

  • Empirical Formula (Hill Notation) C17H20N4O6

  • Molecular Weight 376.36

  •  Beilstein Registry Number 97825

  •  EC Number 201-507-1

  •  MDL number MFCD00005022

  •  eCl@ss 34058005

  •  PubChem Substance ID 24899415




25, 100 g in glass bottle


(-)-Riboflavin has been used to administer intraperitoneally to experimental mice to study its protective role in stroke in middle cerebral artery occlusion. It has also been used with Krebs′ solution, to model ischemia-like conditions in vitro.

Biochem/physiol Actions

Riboflavin serves as a precursor for the active enzyme cofactors riboflavin 5′-monophosphate (also called flavin mononucleotide or FMN) and flavin adenine dinucleotide (FAD). Riboflavin deficiency in the diet results in a well-defined syndrome known as ariboflavinosis, having symptoms including cheilosis, angular stomatitis, glossitis, keratitis, and seborrhoeic dermatitis. Riboflavin exhibits protective effects against tumor development and cardiovascular disease. Its deficiency often affects metabolism involving redox reactions. Riboflavin is found essential for iron absorption, gastrointestinal development, neurogenesis, corneal vascularization and corneal opacity.

General description

Riboflavin is an essential vitamin soluble in water. Milk and eggs are found to be its major sources. Riboflavin is usually bound to enzymes in all tissues. During riboflavin localization in plasma, it is bound to albumin and specific immunoglobulins.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 

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Cell Culture Guide
Protocols & Articles


MSMLS Online Plate Map

Metabolite descriptors included with the software download upon purchase of the product include: Name, Parent CID, molecular formula, molecular weight, CAS, ChEBI, HMDB ID, PubChem Compound and Subst...
Keywords: Mass spectrometry, Metabolites

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