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Pharmacopeial Impurities (EP / USP / BP)

Ketotifen EP Impurity B

Reference StandardAvailable on request

Buy Ketotifen EP Impurity B (CAS 59743-88-3) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Packs from 10 mg.

Pack sizes
Ketotifen EP Impurity B chemical structure
CAS number59743-88-3
FormulaC20H23NO2S
Molar mass341.5 g/mol
Physical formSolid
HS code38229090
InChIKeyAAYKXJAFSKIHRK-UHFFFAOYSA-N
IUPAC name8-methoxy-2-(1-methylpiperidin-4-yl)-6-thiatricyclo[8.4.0.03,7]tetradeca-1(14),3(7),4,8,10,12-hexaen-2-ol

About Ketotifen EP Impurity B

Ketotifen EP Impurity B is supplied by Zemixal as a characterised reference material for Ketotifen analysis. For your records (Reference Standard), the material is defined by CAS 59743-88-3, formula C20H23NO2S and molar mass 341.5 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

It carries the GHS signal word Warning (H302), 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. Every shipment includes a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Ketotifen

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

Ketotifen standards

Typical uses

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

Applications

Grade guides

Specifications and identifiers

Specifications of Ketotifen EP Impurity B
Product nameKetotifen EP Impurity B
Catalogue numberZX-021928
CAS number59743-88-3
IUPAC name8-methoxy-2-(1-methylpiperidin-4-yl)-6-thiatricyclo[8.4.0.03,7]tetradeca-1(14),3(7),4,8,10,12-hexaen-2-ol
Molecular formulaC20H23NO2S
Molar mass341.5 g/mol
Exact mass341.145
GradeReference Standard
Physical formSolid
XLogP33.2
H-bond donors / acceptors1 / 4
Topological polar surface area60.9 Ų
HS code38229090
InChIKeyAAYKXJAFSKIHRK-UHFFFAOYSA-N
SMILESCN1CCC(CC1)C2(C3=C(C(=CC4=CC=CC=C42)OC)SC=C3)O
PubChem CID108389
SynonymsKetotifen Fumarate EP Impurity B, Ketotifen Fumarate - Impurity B, 10-Methoxy-4-(1-methylpiperidin-4-yl)-4H-benzo(4.5)cyclohepta(1,2-b)thiophene-4-ol, 10-methoxy-4-(1-methylpiperidin-4-yl)-4H-benzo[4.5]cyclohepta[1,2-b]thiophene-4-ol, 10-methoxy-4-(1-methylpiperidin-4-yl)-4h-benzo[4,5]cyclohepta[1,2-b]thiophene-4-ol, 10-methoxy-4-(1-methylpiperidin-4-yl)-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-ol, 4-Hydroxy-10-methoxy-4-(1-methyl-4-piperidinyl)-4H-benzo(4,5)cyclohepta[1,2-b]thiophene, 10-methoxy-4-(1-methyl-4-piperidyl)-4h-benzo[4,5]cyclohepta[1,2-b]thiophen-4-ol, (4RS)-10-Methoxy-4-(1-methylpiperidin-4-yl)-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-ol, 10-methoxy-4-(1-methyl-4-piperidinyl)-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-ol, 10-Methoxy-4-(1-methyl-4-piperidinyl)-4H-benzo[4,5]cyclohepta[1,2-b]thiophene-4-ol, 4H-Benzo[4,5]cyclohepta[1,2-b]thiophene-4-ol, 10-methoxy-4-(1-methyl-4-piperidinyl)

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

Precautionary statements P264, P270, P301 + P317, P330, 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 Ketotifen 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 Ketotifen EP Impurity B

Which CAS number identifies Ketotifen EP Impurity B?
Ketotifen EP Impurity B is registered under CAS 59743-88-3. You may also see it listed as Ketotifen Fumarate EP Impurity B, Ketotifen Fumarate - Impurity B, 10-Methoxy-4-(1-methylpiperidin-4-yl)-4H-benzo(4.5)cyclohepta(1,2-b)thiophene-4-ol. Our catalogue number for this item is ZX-021928.
What are the formula and molar mass of Ketotifen EP Impurity B?
For Ketotifen EP Impurity B, its formula is C20H23NO2S and its molar mass is 341.5 g/mol. The systematic (IUPAC) name is 8-methoxy-2-(1-methylpiperidin-4-yl)-6-thiatricyclo[8.4.0.03,7]tetradeca-1(14),3(7),4,8,10,12-hexaen-2-ol. InChIKey AAYKXJAFSKIHRK-UHFFFAOYSA-N lets you match it in any structure database.
How is Ketotifen EP Impurity B used in pharmaceutical QC?
Ketotifen EP Impurity B is a characterised reference material linked to Ketotifen. 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 Ketotifen 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 Ketotifen 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 Ketotifen EP Impurity B to my country?
Yes. Because Ketotifen 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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