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Pharmacopeial Impurities (EP / USP / BP)

Levothyroxine EP Impurity H (Stage -2)

Reference StandardIn stock

Order Levothyroxine EP Impurity H (Stage -2) (CAS 2552-45-6) online at Zemixal: C8H5ClN2O6, COA and SDS with every lot, worldwide shipping.

Pack sizes
Levothyroxine EP Impurity H (Stage -2) chemical structure
CAS number2552-45-6
FormulaC8H5ClN2O6
Molar mass260.59 g/mol
Physical formSolid
HS code38229090
InChIKeyYJUFTUQWRBJBJN-UHFFFAOYSA-N
IUPAC namemethyl 4-chloro-3,5-dinitrobenzoate

About Levothyroxine EP Impurity H (Stage -2)

Levothyroxine EP Impurity H (Stage -2) belongs to the Levothyroxine reference-standard family in the Zemixal catalogue. For your records (Reference Standard), the material is defined by CAS 2552-45-6, formula C8H5ClN2O6 and molar mass 260.59 g/mol. It is handled as a solid.

Where it is used

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

Handling and storage

Hazard communication follows GHS (Warning: H317). Our SDS lists exposure controls and first-aid measures.

Order it in 10 mg, 25 mg, 50 mg, 100 mg and 250 mg packs or ask for a bulk quotation. Every shipment includes 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 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 H (Stage -2)
Product nameLevothyroxine EP Impurity H (Stage -2)
Catalogue numberZX-005794
CAS number2552-45-6
IUPAC namemethyl 4-chloro-3,5-dinitrobenzoate
Molecular formulaC8H5ClN2O6
Molar mass260.59 g/mol
Exact mass259.9836
GradeReference Standard
Physical formSolid
XLogP32.8
H-bond donors / acceptors0 / 6
Topological polar surface area118 Ų
HS code38229090
InChIKeyYJUFTUQWRBJBJN-UHFFFAOYSA-N
SMILESCOC(=O)C1=CC(=C(C(=C1)[N+](=O)[O-])Cl)[N+](=O)[O-]
PubChem CID96161
Synonyms4-Chloro-3,5-dinitrobenzoic acid methyl ester, H 112A, Methyl 3,5-dinitro-4-chlorobenzoate, Levothyroxine EP Impurity H ( Stage -2), Benzoic acid, 4-chloro-3,5-dinitro-, methyl ester, Methyl 4-chloro-3,5-dinitro-benzoate, Benzoic acid,4-chloro-3,5-dinitro-, methyl ester, 4-Chloro-3,5-dinitro-benzoic acid methyl ester, Metyl 4-chloro-3,5-dinitrobenzoate, methyl-4-chloro-3,5-dinitro-benzoate

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

  • H317May cause an allergic skin reaction

Precautionary statements P261, P272, P280, P302 + P352, P321, P333 + P317, P362 + P364, 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 H (Stage -2)
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request
250 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 H (Stage -2)

Which CAS number identifies Levothyroxine EP Impurity H (Stage -2)?
Levothyroxine EP Impurity H (Stage -2) is registered under CAS 2552-45-6. You may also see it listed as 4-Chloro-3,5-dinitrobenzoic acid methyl ester, H 112A, Methyl 3,5-dinitro-4-chlorobenzoate. Our catalogue number for this item is ZX-005794.
What are the formula and molar mass of Levothyroxine EP Impurity H (Stage -2)?
For Levothyroxine EP Impurity H (Stage -2), its formula is C8H5ClN2O6 and its molar mass is 260.59 g/mol. The systematic (IUPAC) name is methyl 4-chloro-3,5-dinitrobenzoate. InChIKey YJUFTUQWRBJBJN-UHFFFAOYSA-N lets you match it in any structure database.
How is Levothyroxine EP Impurity H (Stage -2) used in pharmaceutical QC?
Levothyroxine EP Impurity H (Stage -2) 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 H (Stage -2)?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg, 250 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Levothyroxine EP Impurity H (Stage -2)?
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 H (Stage -2) to my country?
Yes. Because Levothyroxine EP Impurity H (Stage -2) 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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