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Pharmacopeial Impurities (EP / USP / BP)

Fluorouracil EP Impurity B

Reference StandardAvailable on request

Order Fluorouracil EP Impurity B (CAS 496-76-4) online at Zemixal. Request a quote with price, lead time and documents. Packs from 10 mg.

Pack sizes
Fluorouracil EP Impurity B chemical structure
CAS number496-76-4
FormulaC4H4N2O3
Molar mass128.09 g/mol
Physical formSolid
HS code38229090
InChIKeyFQXOOGHQVPKHPG-UHFFFAOYSA-N
IUPAC name1,3-diazinane-2,4,5-trione

About Fluorouracil EP Impurity B

Zemixal lists Fluorouracil EP Impurity B for laboratories that identify, quantify or control Fluorouracil and its related substances. For your records (Reference Standard), the material is defined by CAS 496-76-4, formula C4H4N2O3 and molar mass 128.09 g/mol. It is handled as a solid.

Typical applications

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Handling and storage

Classified under GHS with signal word Warning and hazard statements H315, H319 and H335. Read the SDS before first use.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. You receive a certificate of analysis with characterisation data with each order. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Fluorouracil

See every impurity, metabolite and related compound we list for this API.

Fluorouracil standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Fluorouracil EP Impurity B
Product nameFluorouracil EP Impurity B
Catalogue numberZX-021707
CAS number496-76-4
IUPAC name1,3-diazinane-2,4,5-trione
Molecular formulaC4H4N2O3
Molar mass128.09 g/mol
Exact mass128.0222
GradeReference Standard
Physical formSolid
XLogP3-1.2
H-bond donors / acceptors2 / 3
Topological polar surface area75.3 Ų
HS code38229090
InChIKeyFQXOOGHQVPKHPG-UHFFFAOYSA-N
SMILESC1C(=O)C(=O)NC(=O)N1
PubChem CID96994
Synonyms5-hydroxy Uracil, Fluorouracil Related Compound B, Fluorouracil - Impurity B, Dihydropyrimidine-2,4,5(3H)-trione, 2,4,5(3H)-Pyrimidinetrione, dihydro-, 5-hydroxypyrimidine-2,4(1H,3H)-dione, 5-Hydroxyuracil, Isobarbituric acid, 2,4,5-Trihydroxypyrimidine, Dihydro-2,4,5(3H)-pyrimidinetrione, Isobarbituric acid (VAN), (1h,3h,5h)pyrimidinetrione

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Fluorouracil EP Impurity B
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Fluorouracil EP Impurity B

Which CAS number identifies Fluorouracil EP Impurity B?
Fluorouracil EP Impurity B is registered under CAS 496-76-4. You may also see it listed as 5-hydroxy Uracil, Fluorouracil Related Compound B, Fluorouracil - Impurity B. Our catalogue number for this item is ZX-021707.
What are the formula and molar mass of Fluorouracil EP Impurity B?
For Fluorouracil EP Impurity B, its formula is C4H4N2O3 and its molar mass is 128.09 g/mol. The systematic (IUPAC) name is 1,3-diazinane-2,4,5-trione. InChIKey FQXOOGHQVPKHPG-UHFFFAOYSA-N lets you match it in any structure database.
How is Fluorouracil EP Impurity B used in pharmaceutical QC?
Fluorouracil EP Impurity B is a characterised reference material linked to Fluorouracil. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Fluorouracil EP Impurity B?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Fluorouracil EP Impurity B?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Fluorouracil EP Impurity B to my country?
Yes. Because Fluorouracil EP Impurity B is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

More Fluorouracil standards

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