• 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 $52.90 In stock
1 g $159.90 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

  • B807214

    Buflomedil Hydrochloride

    Alpha blocker and vasoactive agent.

    ≥99%
  • C1627

    Cefaclor Monohydrate

    β-lactam cephalosporin; penicillin binding pro...

    ≥97%
  • C0252

    Canertinib Dihydrochloride

    EGFR inhibitor.

    ≥98%
  • T3357

    Tioconazole

    Imidazole; 14-α demethylase inhibitor.

    ≥98%
  • Q8134

    Quinapril Hydrochloride

    ACE inhibitor.

    ≥98%
  • M0262

    Maprotiline Hydrochloride

    Tetracycline; FIASMA, histamine H1, 5-HT2, mACh...

    ≥98%
  • L5648

    Lomustine

    Nitrosourea, DNA alkylator.

    ≥98%
  • X4402

    XL-147

    Dual inhibitor of PI3K and mTOR.

    ≥98%
  • B0026

    Bafilomycin B1

    Macrolide; vacuolar H+-ATPase inhibitor.

    ≥97%
  • S6000

    Sparfloxacin

    Fluoroquinolone; topoisomerase IV and bacterial...

    ≥98%
  • S1069

    Scriptaid

    HDAC inhibitor.

    ≥98%
  • A5334

    Anisodamine

    Tropane alkaloid found in Solanaceae plants; α...

    ≥97%
  • B5871

    Bortezomib

    Proteasome inhibitor.

    ≥98%
  • N3323

    Nifuratel

    Nitrofuran derivative.

    ≥99%
  • P0109

    P7C3A20

    Fluorinated aminopropyl carbazole, neuroprotect...

    ≥94%
  • U698574

    Urolithin A

    Ellagic acid derivative produced by gut microfl...

    ≥98%
  • C600000

    CP 55940

    Non-selective CB receptor agonist.

    ≥97%
  • T0249

    Tamibarotene

    RARα/β agonist.

    ≥98%
  • G3457

    Ginsenoside Re

    Triterpene saponin found in species of Panax; P...

    ≥98%
  • L1782

    Levodopa

    Endogenous catecholamine precursor, also found ...

    ≥98%

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

©2025 LKT Laboratories, All Rights Reserved - Products for research use only