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5-Bromouracil

CAS 51-20-7C4H3BrN2O2Chemical Synthesis

5-Bromouracil (CAS: 51-20-7), with the molecular formula C4H3BrN2O2 and a molecular weight of 190.98 g/mol, is a pyrimidine derivative. This compound serves as a valuable building block in organic synthesis and is employed in biochemical research. Tech Serve Solutions supplies 5-Bromouracil with an assay of ≥95.0% (HPLC), suitable for various laboratory and synthesis applications.

IUPAC
5-Bromo-2,4-dihydroxypyrimidine
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5-Bromouracil (C4H3BrN2O2) — chemical structure, CAS 51-20-7; Chemistry, fine chemical supplied by Tech Serve Solutions
Biochemicals and ReagentsBuilding BlocksChemical SynthesisHalogenated HeterocyclesHeterocyclic Building BlocksNucleoside AnalogsNucleosidesNucleotidesOligonucleotidesPyrimidines More...
01 /Applications

Synthesis of Orotic Acid Derivatives

5-Bromouracil has been utilised in the preparation of N-substituted orotic acid derivatives, contributing to the synthesis of novel chemical entities.

Analytical Chemistry Standard

This compound has been employed as an internal standard in the high-performance liquid chromatography (HPLC) method for the simultaneous determination of 5-fluorouracil and its prodrug, tegafur, in biological samples like dog plasma.

Heterocyclic Building Block

As a halogenated heterocycle, 5-Bromouracil functions as a versatile building block for constructing more complex heterocyclic structures in organic synthesis.

02 /Properties
Molecular weight190.98
Empirical formulaC4H3BrN2O2
Assay≥95.0% (HPLC)
Application5-Bromouracil was used in the synthesis of N-substituted orotic acid derivatives1. It was also used as internal standard in simultaneous determination of 5-fluorouracil and its prodrug, tegafur in dog plasma by HPLC2.
Melting point>300 °C(lit.)~304 °C (dec.)
03 /Safety & handling
GHS hazard pictogram: Harmful / irritant (GHS07)
Harmful / irritant
Warning

Hazard statements

  • H302Harmful if swallowed
Protective equipmentdust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK, DE)3
Hazard codes (EU)Xn
Risk statements (R)22

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry
CAS number
51-20-7
MDL number
MFCD00006017
PubChem substance
24851231
Beilstein registry
127176
05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is 5-Bromouracil used for?

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5-Bromouracil is used in chemical synthesis, particularly for preparing N-substituted orotic acid derivatives and as an internal standard in analytical chemistry, for example, in the determination of 5-fluorouracil and tegafur in plasma.

What are the CAS number and formula for 5-Bromouracil?

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The CAS number for 5-Bromouracil is 51-20-7, and its empirical formula is C4H3BrN2O2.

What grade and purity does Tech Serve Solutions supply for 5-Bromouracil?

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Tech Serve Solutions supplies 5-Bromouracil with a purity of ≥95.0% as determined by HPLC. This product is supplied for research and laboratory use and is not represented as pharmacopoeia grade (e.g., USP, BP, EP).

How should 5-Bromouracil be handled safely?

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5-Bromouracil is classified with a GHS07 symbol and a Warning signal word, carrying the hazard statement H302 (Harmful if swallowed). Appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves, should be worn during handling to minimise exposure.

Is 5-Bromouracil subject to any special regulations or controls?

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Based on the provided data, there is no indication that 5-Bromouracil is a controlled substance. However, users should always comply with local regulations regarding chemical handling and use.

How is 5-Bromouracil typically packed and exported?

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5-Bromouracil is carefully packed to ensure stability during transit and is exported globally by Tech Serve Solutions in compliance with international shipping regulations for chemical products.

How can I request a sample or quote for 5-Bromouracil?

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To request a sample or a quote for 5-Bromouracil, please contact the Tech Serve Solutions sales team through our website or by direct inquiry, providing your specific requirements.

Need 5-Bromouracil in a specific grade or volume?