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Pharmacopeial Impurities (EP / USP / BP)

Levothyroxine EP Impurity A

Reference StandardIn stock

Order Levothyroxine EP Impurity A (CAS 6893-02-3) online at Zemixal. Request a quote with price, lead time and documents.

Pack sizes
Levothyroxine EP Impurity A chemical structure
CAS number6893-02-3
FormulaC15H12I3NO4
Molar mass650.97 g/mol
Physical formSolid
HS code38229090
InChIKeyAUYYCJSJGJYCDS-LBPRGKRZSA-N
IUPAC name(2S)-2-amino-3-[4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl]propanoic acid

About Levothyroxine EP Impurity A

Analytical teams working on Levothyroxine use Levothyroxine EP Impurity A as a qualified comparison standard. Key data (Reference Standard): CAS 6893-02-3, formula C15H12I3NO4 and molar mass 650.97 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Handling and storage

It carries the GHS signal word Warning (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. 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 Levothyroxine

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

Levothyroxine 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 Levothyroxine EP Impurity A
Product nameLevothyroxine EP Impurity A
Catalogue numberZX-005786
CAS number6893-02-3
IUPAC name(2S)-2-amino-3-[4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl]propanoic acid
Molecular formulaC15H12I3NO4
Molar mass650.97 g/mol
Exact mass650.7901
GradeReference Standard
Physical formSolid
XLogP31.7
H-bond donors / acceptors3 / 5
Topological polar surface area92.8 Ų
HS code38229090
InChIKeyAUYYCJSJGJYCDS-LBPRGKRZSA-N
SMILESC1=CC(=C(C=C1OC2=C(C=C(C=C2I)C[C@@H](C(=O)O)N)I)I)O
PubChem CID5920
Synonyms3,3',5-Triiodo-L-thyronine, O-(4-Hydroxy-3-iodophenyl)-3,5-diiodo-L-tyrosine, (2S)-2-Azaniumyl-3-[4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl]propanoate, (S)-2-Amino-3-(4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl)propanoicacid, 3,3',5-Triiodothyronine, 3,5,3'-Triiodothyronine, 4-(4-Hydroxy-3-iodophenoxy)-3,5-diiodophenylalanine, Cyronine, L-Liothyronine, L-T3, L-Triiodothyronine, Liothyronin

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 Levothyroxine EP Impurity A
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 Levothyroxine EP Impurity A

Which CAS number identifies Levothyroxine EP Impurity A?
Levothyroxine EP Impurity A is registered under CAS 6893-02-3. You may also see it listed as 3,3',5-Triiodo-L-thyronine, O-(4-Hydroxy-3-iodophenyl)-3,5-diiodo-L-tyrosine, (2S)-2-Azaniumyl-3-[4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl]propanoate. Our catalogue number for this item is ZX-005786.
What are the formula and molar mass of Levothyroxine EP Impurity A?
For Levothyroxine EP Impurity A, its formula is C15H12I3NO4 and its molar mass is 650.97 g/mol. The systematic (IUPAC) name is (2S)-2-amino-3-[4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl]propanoic acid. InChIKey AUYYCJSJGJYCDS-LBPRGKRZSA-N lets you match it in any structure database.
How is Levothyroxine EP Impurity A used in pharmaceutical QC?
Levothyroxine EP Impurity A is a characterised reference material linked to Levothyroxine. 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 Levothyroxine EP Impurity A?
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 Levothyroxine EP Impurity A?
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 Levothyroxine EP Impurity A to my country?
Yes. Because Levothyroxine EP Impurity A 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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