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Pharmacopeial Impurities (EP / USP / BP)

Riboflavin EP Impurity B

Reference StandardAvailable on request

Buy Riboflavin EP Impurity B (CAS 1086-80-2) from Zemixal: C12H10N4O2, COA and SDS with every lot, worldwide shipping. Packs from 10 mg.

Pack sizes
Riboflavin EP Impurity B chemical structure
CAS number1086-80-2
FormulaC12H10N4O2
Molar mass242.23 g/mol
Physical formSolid
HS code38229090
InChIKeyZJTJUVIJVLLGSP-UHFFFAOYSA-N
IUPAC name7,8-dimethyl-1H-benzo[g]pteridine-2,4-dione

About Riboflavin EP Impurity B

Zemixal lists Riboflavin EP Impurity B for laboratories that identify, quantify or control Riboflavin and its related substances. Identity at a glance (Reference Standard): CAS 1086-80-2, formula C12H10N4O2 and molar mass 242.23 g/mol. It is handled as a solid.

Use cases we see most often

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

Safe handling

It carries the GHS signal word Warning (H302, H315, H319 and H335), so wear gloves and eye protection and work with good ventilation.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Riboflavin

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

Riboflavin 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 Riboflavin EP Impurity B
Product nameRiboflavin EP Impurity B
Catalogue numberZX-023033
CAS number1086-80-2
IUPAC name7,8-dimethyl-1H-benzo[g]pteridine-2,4-dione
Molecular formulaC12H10N4O2
Molar mass242.23 g/mol
Exact mass242.0804
GradeReference Standard
Physical formSolid
XLogP31.1
H-bond donors / acceptors2 / 4
Topological polar surface area84 Ų
HS code38229090
InChIKeyZJTJUVIJVLLGSP-UHFFFAOYSA-N
SMILESCC1=CC2=C(C=C1C)N=C3C(=N2)C(=O)NC(=O)N3
PubChem CID5326566
SynonymsLumichrome, Riboflavin - Impurity B, 7,8-Dimethylalloxazine, Riboflavin lumichrome, Alloxazine, 7,8-dimethyl-, 7,8-dimethylisoalloxazine, Benzo[g]pteridine-2,4(1H,3H)-dione, 7,8-dimethyl-, Benzo(g)pteridine-2,4(1H,3H)-dione, 7,8-dimethyl-, 7,8-dimethyl-1H-benzo(g)pteridine-2,4-dione, 7,8-dimethylbenzo[g]pteridine-2,4(1H,3H)-dione, 7,8-dimethylbenzo[g]pteridine-2,4(3H,10H)-dione, 7,8-dimethyl-1H-benzo[g]pteridine-2,4-quinone

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

  • H302Harmful if swallowed
  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, 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 Riboflavin 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 Riboflavin EP Impurity B

Which CAS number identifies Riboflavin EP Impurity B?
Riboflavin EP Impurity B is registered under CAS 1086-80-2. You may also see it listed as Lumichrome, Riboflavin - Impurity B, 7,8-Dimethylalloxazine. Our catalogue number for this item is ZX-023033.
What are the formula and molar mass of Riboflavin EP Impurity B?
For Riboflavin EP Impurity B, its formula is C12H10N4O2 and its molar mass is 242.23 g/mol. The systematic (IUPAC) name is 7,8-dimethyl-1H-benzo[g]pteridine-2,4-dione. InChIKey ZJTJUVIJVLLGSP-UHFFFAOYSA-N lets you match it in any structure database.
How is Riboflavin EP Impurity B used in pharmaceutical QC?
Riboflavin EP Impurity B is a characterised reference material linked to Riboflavin. 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 Riboflavin 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 Riboflavin 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 Riboflavin EP Impurity B to my country?
Yes. Because Riboflavin 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.

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