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Pharmacopeial Impurities (EP / USP / BP)

Clotrimazole EP Impurity A

Reference StandardAvailable on request

Buy Clotrimazole EP Impurity A (CAS 66774-02-5) from Zemixal: C19H15ClO, COA and SDS with every lot, worldwide shipping.

Pack sizes
Clotrimazole EP Impurity A chemical structure
CAS number66774-02-5
FormulaC19H15ClO
Molar mass294.8 g/mol
Physical formSolid
HS code38229090
InChIKeyKTVAHLGKTSPDOG-UHFFFAOYSA-N
IUPAC name(2-chlorophenyl)-diphenylmethanol

About Clotrimazole EP Impurity A

Analytical teams working on Clotrimazole use Clotrimazole EP Impurity A as a qualified comparison standard. Identity at a glance (Reference Standard): CAS 66774-02-5, formula C19H15ClO and molar mass 294.8 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

Storage and safety notes

It carries the GHS signal word Danger (H302, H315, H318 and H335), so wear gloves and eye protection and work with good ventilation.

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 Clotrimazole

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

Clotrimazole 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 Clotrimazole EP Impurity A
Product nameClotrimazole EP Impurity A
Catalogue numberZX-021273
CAS number66774-02-5
IUPAC name(2-chlorophenyl)-diphenylmethanol
Molecular formulaC19H15ClO
Molar mass294.8 g/mol
Exact mass294.0811
GradeReference Standard
Physical formSolid
XLogP34.7
H-bond donors / acceptors1 / 1
Topological polar surface area20.2 Ų
HS code38229090
InChIKeyKTVAHLGKTSPDOG-UHFFFAOYSA-N
SMILESC1=CC=C(C=C1)C(C2=CC=CC=C2)(C3=CC=CC=C3Cl)O
PubChem CID298659
SynonymsClotrimazole EP Impurity A (Free Base), Clotrimazole - Impurity A, (2-Chlorophenyl)diphenylmethanol, TRAM 3, o-Chlorophenyldiphenylmethanol, Benzenemethanol, 2-chloro-alpha,alpha-diphenyl-, TRAM-3, MDK-4025, (2-chlorophenyl)-diphenyl-methanol, (o-Chlorophenyl)diphenylmethanol, 2-chlorotrityl alcohol, Clotrimazol Impureza A

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

Safety and GHS hazards

GHS05 Corrosive
Corrosive
GHS07 Irritant or harmful
Irritant or harmful

Signal word Danger

  • H302Harmful if swallowed
  • H315Causes skin irritation
  • H318Causes serious eye damage
  • H335May cause respiratory irritation
  • H413May cause long lasting harmful effects to aquatic life

Precautionary statements P261, P264, P264 + P265, P270, P271, P273, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P354 + P338, P317, P319, P321, P330, P332 + 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 Clotrimazole 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 Clotrimazole EP Impurity A

Which CAS number identifies Clotrimazole EP Impurity A?
Clotrimazole EP Impurity A is registered under CAS 66774-02-5. You may also see it listed as Clotrimazole EP Impurity A (Free Base), Clotrimazole - Impurity A, (2-Chlorophenyl)diphenylmethanol. Our catalogue number for this item is ZX-021273.
What are the formula and molar mass of Clotrimazole EP Impurity A?
For Clotrimazole EP Impurity A, its formula is C19H15ClO and its molar mass is 294.8 g/mol. The systematic (IUPAC) name is (2-chlorophenyl)-diphenylmethanol. InChIKey KTVAHLGKTSPDOG-UHFFFAOYSA-N lets you match it in any structure database.
How is Clotrimazole EP Impurity A used in pharmaceutical QC?
Clotrimazole EP Impurity A is a characterised reference material linked to Clotrimazole. 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 Clotrimazole 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 Clotrimazole 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 Clotrimazole EP Impurity A to my country?
Yes. Because Clotrimazole 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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