• Skip to primary navigation
  • Skip to main content
  • Skip to footer

LKT Labs

Biochemicals for Life Science Research

  • Products
    • New Products
    • Cancer Biology
    • Cardiovascular
    • Endocrine Signaling and Immunology
    • Metabolic and GI Pathology
    • Microbiology
    • Natural Products
    • Neuroscience
    • Peptides
    • Pharmaceutical Impurities and Derivatives
    • Stem Cell Modulators
  • Services
    • Custom Synthesis
    • Natural Product Isolation
    • Analytical Services
  • Int’l Distributors
  • Support
    • About LKT Labs
    • General Inquiry
    • Bulk Quote Request
    • Document Request
    • Technical Support
    • Catalog Request
    • Product Flyers
  • Contact Us
  • Cart
  • Login / Register
Fluorouracil Impurity B

Fluorouracil Impurity B

Product ID F465818
Cas No. 496-76-4, 20636-41-3
Purity ≥95%
Product Unit SizeCostQuantityStock
250 mg $53.00 In stock
1 g $160.00 In stock
Bulk Quote

Quicklinks

  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Custom Order

Description

Fluorouracil Impurity B (isobarbituric acid) is an impurity of the pharmaceutical, fluorouracil.

Product Info

Cas No.

496-76-4, 20636-41-3

Purity

≥95%

Formula

C4H4N2O3

Formula Wt.

128.09

Chemical Name

Isobarbituric Acid

IUPAC Name

1,3-diazinane-2,4,5-trione

Synonym

5-Hydroxyuracil, Isobarbituric Acid, 2,4,5-Trihydroxypyrimidine; 5-hydroxy-1H-pyrimidine-2,4-dione; Pyrimidine-2,4,5-triol.

Solubility

Freely soluble in water.

Shipping and Storage

Store Temp

4°C

Ship Temp

Ambient

Downloads

Info Sheet

F465818 Info Sheet PDF

Custom Order

  • Size of single unit expressed as number (e.g. '500' in the case of 500 mg)
  • Total quantity of unit size desired (e.g. '10' in the case of 10 x 500 mg). If only one unit is desired, you may leave this blank.
  • This field is for validation purposes and should be left unchanged.

Related Products

  • S1846

    Selumetinib

    MEK1/2 inhibitor.

    ≥99%
  • A2056

    Aflatoxin Q1

    Mycotoxin metabolite

    ≥98%
  • L1869

    Lercanidipine Hydrochloride

    Calcium channel blocker.

    ≥98%
  • E6257

    Epothilone B

    Microtubule depolymerization inhibitor.

    ≥98%
  • N6272

    NPS-2143 Hydrochloride

    Ca2+-sensing receptor antagonist.

    ≥99%
  • A7656

    Atomoxetine Hydrochloride

    NET and SERT inhibitor, NMDA antagonist.

    ≥99%
  • M8007

    Mubritinib, Free Base

    EGFR2 inhibitor.

    ≥99%
  • G7444

    GSK-1070916

    AurKB/C inhibitor.

    ≥98%
  • M1605

    Mebendazole

    Benzimidazole; microtubule polymerization inhib...

    ≥98%
  • A4617

    Aloe Emodin

    Anthraquinone found in aloe; CTFR Cl- channel a...

    ≥98%
  • C864760

    CVT-313

    Selective CDK2 inhibitor.

    ≥98%
  • E5178

    Emtricitabine

    Nucleoside (cytidine) analog; RT and telomerase...

    ≥98%
  • D5607

    Dobutamine Hydrochloride

    β1-adrenergic agonist, β2- and α1-adrenergic...

    ≥98%
  • E325125

    EIDD-2801

    COVID-19 research

    ≥98%
  • M0374

    Masitinib

    PDGFR and c-Kit inhibitor.

    ≥99%
  • Z161023

    β-Zearalanol

    Mycotoxin that has structural similarity to est...

    ≥98%
  • L1878

    Letrozole

    Aromatase inhibitor.

    ≥98%
  • P6956

    Prostaglandin E1

    Endogenous prostaglandin, vasodilator.

    ≥98%
  • D0244

    Dalcetrapib

    Cholesterol ester transfer protein inhibitor.

    ≥98%
  • N5655

    Nonoxynol-9

    Nonoxynol surfactant.

    90-110%

Footer

  • Contact Us
  • About Us
  • Site Map
  • Terms and Conditions
LKT Laboratories, Inc.
545 Phalen Blvd.
St. Paul MN, 55130

Ph: (888)-558-5227
Fax: (888)-558-7329

©2026 LKT Laboratories, All Rights Reserved - Products for research use only