5-Fluoroorotic acid ≥98%, pale yellow crystalline powder

Supplier: MP Biomedicals
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Synonyms: 5-FOA5-Fluoro-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid5-Fluorouracil-4-carboxylic acid2,6-Dihydroxy-5-fluoropyrimidine-4-carboxylic acid

ICNA0215421091EA 1180 GBP
ICNA0215421091 ICNA0215421083 ICNA0215421050
5-Fluoroorotic acid ≥98%, pale yellow crystalline powder
5-Fluoroorotic acid

FOA is a derivative of a pyrimidine precursor and is selectively toxic to yeast cells which synthesize orotidine-5’-phosphate decarboxylase. FOA has been used in a positive selection for uracil-requiring mutants(in the presence of large numbers of wild-type cells) lacking OMPdecase or OPRTase activities. This results in efficient strains for effective transformation systems.


5-Fluoroorotic acid is useful in the selection of orotidine-5′-phosphate decarboxylase mutants of Saccharomyces cerevisiae.It has been used as a selective agent in yeast molecular genetics.It has also been used in the positive selection for uracil auxotrophs of the sulphur-dependent thermophilic archaebacterium sulpholobus acidocaldarius.


Soluble in hot water or methanol; soluble in 1:1 NH4OH : H2O (50 mg/ml with gentle heating).

Formula: C₅H₃FN₂O₄
MW: 174.09 g/mol
Melting Pt: 278 °C (dec., lit.)
MDL Number: MFCD00042526
CAS Number: 703-95-7
EINECS: 211-876-0

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Specification Test Results

Identity Test Passes
Purity ≥98%
FTIR Conforms to Reference

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