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Pharmacopeial Impurities (EP / USP / BP)

Closantel EP Impurity B

Reference StandardAvailable on request

Order Closantel EP Impurity B (CAS 61437-85-2) online at Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-024039.

Pack sizes
Closantel EP Impurity B chemical structure
CAS number61437-85-2
FormulaC15H12Cl2N2
Molar mass291.2 g/mol
Physical formSolid
HS code38229090
InChIKeySCNVPMWFNDBBQS-UHFFFAOYSA-N
IUPAC name2-(4-amino-2-chloro-5-methylphenyl)-2-(4-chlorophenyl)acetonitrile

About Closantel EP Impurity B

Analytical teams working on Closantel use Closantel EP Impurity B as a qualified comparison standard. For your records (Reference Standard), the material is defined by CAS 61437-85-2, formula C15H12Cl2N2 and molar mass 291.2 g/mol. It is handled as a solid.

Where it is used

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

Storage and safety notes

Hazard communication follows GHS (Warning: H302, H312, H315 and H319). Our SDS lists exposure controls and first-aid measures.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. 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 Closantel

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

Closantel 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 Closantel EP Impurity B
Product nameClosantel EP Impurity B
Catalogue numberZX-024039
CAS number61437-85-2
IUPAC name2-(4-amino-2-chloro-5-methylphenyl)-2-(4-chlorophenyl)acetonitrile
Molecular formulaC15H12Cl2N2
Molar mass291.2 g/mol
Exact mass290.0378
GradeReference Standard
Physical formSolid
XLogP34.2
H-bond donors / acceptors1 / 2
Topological polar surface area49.8 Ų
HS code38229090
InChIKeySCNVPMWFNDBBQS-UHFFFAOYSA-N
SMILESCC1=CC(=C(C=C1N)Cl)C(C#N)C2=CC=C(C=C2)Cl
PubChem CID2723752
SynonymsClosantel Sodium Dihydrate - Impurity B, 4-Amino-2-chloro-alpha-(4-chlorophenyl)-5-methylbenzeneacetonitrile, (4-Amino-2-chloro-5-methylphenyl)(4-chlorophenyl)acetonitrile, (2RS)-(4-amino-2-chloro-5-methylphenyl)(4-chlorophenyl)ethanenitrile, 2-Amino-4-chloro-5-(4'-chlorophenyl) cyanomethyl toluene, 2-(4-amino-2-chloro-5-methyl-phenyl)-2-(4-chlorophenyl)acetonitrile, 5-chloro-4-[(4-chloro-phenyl)-cyano-methyl]-2-methylanilin, 2-(4-amino-2-chloro-5-methylphenyl)-2-(4-chlorophenyl)ethanenitrile, 4-Amino-2-chloro-.alpha.-(4-chlorophenyl)-5-methylbenzeneacetonitrile, Benzeneacetonitrile, 4-amino-2-chloro-.alpha.-(4-chlorophenyl)-5-methyl-, Benzeneacetonitrile, 4-amino-2-chloro-alpha-(4-chlorophenyl)-5-methyl-

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
  • H312Harmful in contact with skin
  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H332Harmful if inhaled
  • H335May cause respiratory irritation

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

Which CAS number identifies Closantel EP Impurity B?
Closantel EP Impurity B is registered under CAS 61437-85-2. You may also see it listed as Closantel Sodium Dihydrate - Impurity B, 4-Amino-2-chloro-alpha-(4-chlorophenyl)-5-methylbenzeneacetonitrile, (4-Amino-2-chloro-5-methylphenyl)(4-chlorophenyl)acetonitrile. Our catalogue number for this item is ZX-024039.
What are the formula and molar mass of Closantel EP Impurity B?
For Closantel EP Impurity B, its formula is C15H12Cl2N2 and its molar mass is 291.2 g/mol. The systematic (IUPAC) name is 2-(4-amino-2-chloro-5-methylphenyl)-2-(4-chlorophenyl)acetonitrile. InChIKey SCNVPMWFNDBBQS-UHFFFAOYSA-N lets you match it in any structure database.
How is Closantel EP Impurity B used in pharmaceutical QC?
Closantel EP Impurity B is a characterised reference material linked to Closantel. 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 Closantel 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 Closantel 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 Closantel EP Impurity B to my country?
Yes. Because Closantel 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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