• 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

  • A5032

    D,L-Aminoglutethimide

    Aromatase inhibitor.

    ≥98%
  • O486188

    Omeprazole Impurity F and G mixture

    Regioisomers

    ≥98%
  • C4274

    CKS-17

    Synthetic peptide, retroviral envelope protein ...

    ≥95%
  • S3368

    S1RA

    σ1 antagonist.

    ≥99%
  • F7657

    Ftorafur

    5-fluorouracil prodrug, pyrimidine analog; thym...

    ≥99%
  • G6802

    Granisetron Hydrochloride

    5-HT3 antagonist.

    ≥98%
  • X0384

    XAV-939

    Tankyrase inhibitor.

    ≥98%
  • M9646

    Myelin Basic Protein (68-82), guinea pig

    Immunodominant peptide epitope occurring in mul...

    ≥95%
  • A5276

    Angiotensin I, human

    Endogenous peptide, cleavage product of angiote...

    ≥98%
  • E4418

    β-Elemene

    Sesquiterpene found in various plant sources. <...

    ≥98%
  • O9596

    Oxybutynin Hydrochloride

    mAChR antagonist.

    ≥98%
  • C1176

    CCT-128930

    Pyrrolopyrimidine; Akt inhibitor.

    ≥98%
  • M1975

    S-(N-Methylthiocarbamoyl)-L-cysteine

    Cysteine-ITC conjugate, antioxidant; aldehyde d...

    ≥98%
  • S0254

    Sanguinarine Chloride

    Decreases expression of MMPs, PGE2, and COX-2, ...

    ≥98%
  • S8098

    SU-1498

    Tyrphostin; VEGFR inhibitor.

    ≥99%
  • P6855

    (±)-S-Propyl-L-cysteine-S-oxide

    Organosulfur found in Allium; analog of alliin....

    ≥98%
  • I530280

    INH1

    Hec1/Nek2 mitotic pathway inhibitor

    ≥98%
  • T3305

    Tibolone

    Synthetic steroid hormone used in HRT; SERM, PR...

    ≥98%
  • P2997

    Phytic Acid, 40-50 wt% aqueous solution

    Saturated cyclic acid used to store phosphorus ...

    ≥40%
  • F5869

    N-formyl-Met-Ala-Ser

    Peptide, involved in neutrophil activation; FPR...

    ≥95%

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