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API Impurities

N-(p-Toluenesulfonyl)-L-phenylalanine

Reference StandardAvailable on request

N-(p-Toluenesulfonyl)-L-phenylalanine (CAS 13505-32-3) supplier Zemixal: C16H17NO4S, COA and SDS with every lot, worldwide shipping.

Pack sizes
N-(p-Toluenesulfonyl)-L-phenylalanine chemical structure
CAS number13505-32-3
FormulaC16H17NO4S
Molar mass319.4 g/mol
Physical formSolid
HS code38229090
InChIKeyCGRCVIZBNRUWLY-HNNXBMFYSA-N
IUPAC name(2S)-2-[(4-methylphenyl)sulfonylamino]-3-phenylpropanoic acid

About N-(p-Toluenesulfonyl)-L-phenylalanine

Analytical teams working on Eribulin use N-(p-Toluenesulfonyl)-L-phenylalanine as a qualified comparison standard. For your records (Reference Standard), the material is defined by CAS 13505-32-3, formula C16H17NO4S and molar mass 319.4 g/mol. It is handled as a solid.

Common uses in the lab and plant

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Handling and storage

Classified under GHS with signal word Danger and hazard statements H301. Read the SDS before first use.

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 Eribulin

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

Eribulin standards

Typical uses

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of N-(p-Toluenesulfonyl)-L-phenylalanine
Product nameN-(p-Toluenesulfonyl)-L-phenylalanine
Catalogue numberZX-033051
CAS number13505-32-3
IUPAC name(2S)-2-[(4-methylphenyl)sulfonylamino]-3-phenylpropanoic acid
Molecular formulaC16H17NO4S
Molar mass319.4 g/mol
Exact mass319.0878
GradeReference Standard
Physical formSolid
XLogP32.8
H-bond donors / acceptors2 / 5
Topological polar surface area91.9 Ų
HS code38229090
InChIKeyCGRCVIZBNRUWLY-HNNXBMFYSA-N
SMILESCC1=CC=C(C=C1)S(=O)(=O)N[C@@H](CC2=CC=CC=C2)C(=O)O
PubChem CID99327
SynonymsN-p-Tosyl-L-Phenylalanine, n-tosyl-(s)-phenylalanine, N-((4-Methylphenyl)sulfonyl)-L-phenylalanine, N-[(4-methylphenyl)sulfonyl]-L-phenylalanine, L-Phenylalanine, N-((4-methylphenyl)sulfonyl)-, N-(p-Toluenesulfonyl)-(S)-phenylalanine, L-Phenylalanine, N-[(4-methylphenyl)sulfonyl]-, Tos-Phe-OH, Tosyl-L-phenylalanine, n-tosyl-l-phenylalanine, Phenylalanine, N-[(4-methylphenyl)sulfonyl]-, (2S)-2-(4-methylbenzenesulfonamido)-3-phenylpropanoic acid

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

Safety and GHS hazards

GHS06 Acute toxicity
Acute toxicity

Signal word Danger

  • H301Toxic if swallowed

Precautionary statements P264, P270, P301 + P316, P321, P330, 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 N-(p-Toluenesulfonyl)-L-phenylalanine
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 N-(p-Toluenesulfonyl)-L-phenylalanine

Which CAS number identifies N-(p-Toluenesulfonyl)-L-phenylalanine?
N-(p-Toluenesulfonyl)-L-phenylalanine is registered under CAS 13505-32-3. You may also see it listed as N-p-Tosyl-L-Phenylalanine, n-tosyl-(s)-phenylalanine, N-((4-Methylphenyl)sulfonyl)-L-phenylalanine. Our catalogue number for this item is ZX-033051.
What are the formula and molar mass of N-(p-Toluenesulfonyl)-L-phenylalanine?
For N-(p-Toluenesulfonyl)-L-phenylalanine, its formula is C16H17NO4S and its molar mass is 319.4 g/mol. The systematic (IUPAC) name is (2S)-2-[(4-methylphenyl)sulfonylamino]-3-phenylpropanoic acid. InChIKey CGRCVIZBNRUWLY-HNNXBMFYSA-N lets you match it in any structure database.
How is N-(p-Toluenesulfonyl)-L-phenylalanine used in pharmaceutical QC?
N-(p-Toluenesulfonyl)-L-phenylalanine is a characterised reference material linked to Eribulin. 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 N-(p-Toluenesulfonyl)-L-phenylalanine?
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 N-(p-Toluenesulfonyl)-L-phenylalanine?
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 N-(p-Toluenesulfonyl)-L-phenylalanine to my country?
Yes. Because N-(p-Toluenesulfonyl)-L-phenylalanine 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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