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API Impurities

Tofacitinib Impurity R

Reference StandardIn stock

Buy Tofacitinib Impurity R (CAS 479633-63-1) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Part of our API Impurities range.

Pack sizes
Tofacitinib Impurity R chemical structure
CAS number479633-63-1
FormulaC13H10ClN3O2S
Molar mass307.76 g/mol
Physical formSolid
HS code38229090
InChIKeyBTOJSYRZQZOMOK-UHFFFAOYSA-N
IUPAC name4-chloro-7-(4-methylphenyl)sulfonylpyrrolo[2,3-d]pyrimidine

About Tofacitinib Impurity R

Tofacitinib Impurity R is supplied by Zemixal as a characterised reference material for Tofacitinib analysis. Identity at a glance (Reference Standard): CAS 479633-63-1, formula C13H10ClN3O2S and molar mass 307.76 g/mol. It is handled as a solid.

Use cases we see most often

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

Safe handling

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

Available as 10 mg, 25 mg, 50 mg, 100 mg and 250 mg. Larger or split packs can be arranged. You receive a certificate of analysis with characterisation data with each order. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Tofacitinib

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

Tofacitinib 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 Tofacitinib Impurity R
Product nameTofacitinib Impurity R
Catalogue numberZX-005450
CAS number479633-63-1
IUPAC name4-chloro-7-(4-methylphenyl)sulfonylpyrrolo[2,3-d]pyrimidine
Molecular formulaC13H10ClN3O2S
Molar mass307.76 g/mol
Exact mass307.0182
GradeReference Standard
Physical formSolid
XLogP33.2
H-bond donors / acceptors0 / 4
Topological polar surface area73.2 Ų
HS code38229090
InChIKeyBTOJSYRZQZOMOK-UHFFFAOYSA-N
SMILESCC1=CC=C(C=C1)S(=O)(=O)N2C=CC3=C2N=CN=C3Cl
PubChem CID44228967
Synonyms4-Chloro-7-tosyl-7H-pyrrolo[2,3-d]pyrimidine, 4-Chloro-7-[(4-methylphenyl)sulfonyl]-7H-pyrrolo[2,3-d]pyrimidine, 4-Chloro-7-(4-methylphenylsulfonyl)-7H-pyrrolo[2,3-d]pyrimidine, 4-Chloro-7-(p-toluenesulfonyl)-7H-pyrrolo[2,3-d]pyrimidine, 4-Chloro-7-(p-toluenesulfonyl)-7H-pyrrolo(2,3-d)pyrimidine, 4-chloro-7-(4-methylbenzenesulfonyl)-7H-pyrrolo[2,3-d]pyrimidine, Tofacitinib Impurity 09, Tofacitinib Impurity D, Chloro-7-tosyl-7H-pyrrolo[2,3-d]pyrimidine, 4-Chloro-7-(4-methylb, 4-Chloro-7-(toluene-4-sulfonyl)-7H-pyrrolo[2,3-d]pyrimidine, CS-B0636

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

  • H315Causes skin irritation
  • H319Causes serious eye irritation

Precautionary statements P264, P264 + P265, P280, P302 + P352, P305 + P351 + P338, P321, P332 + P317, P337 + P317, P362 + P364

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 Tofacitinib Impurity R
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request
250 mgQuoted on request
500 mgQuoted on request
1 gQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Tofacitinib Impurity R

Which CAS number identifies Tofacitinib Impurity R?
Tofacitinib Impurity R is registered under CAS 479633-63-1. You may also see it listed as 4-Chloro-7-tosyl-7H-pyrrolo[2,3-d]pyrimidine, 4-Chloro-7-[(4-methylphenyl)sulfonyl]-7H-pyrrolo[2,3-d]pyrimidine, 4-Chloro-7-(4-methylphenylsulfonyl)-7H-pyrrolo[2,3-d]pyrimidine. Our catalogue number for this item is ZX-005450.
What are the formula and molar mass of Tofacitinib Impurity R?
For Tofacitinib Impurity R, its formula is C13H10ClN3O2S and its molar mass is 307.76 g/mol. The systematic (IUPAC) name is 4-chloro-7-(4-methylphenyl)sulfonylpyrrolo[2,3-d]pyrimidine. InChIKey BTOJSYRZQZOMOK-UHFFFAOYSA-N lets you match it in any structure database.
How is Tofacitinib Impurity R used in pharmaceutical QC?
Tofacitinib Impurity R is a characterised reference material linked to Tofacitinib. 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 Tofacitinib Impurity R?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg, 250 mg, 500 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Tofacitinib Impurity R?
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 Tofacitinib Impurity R to my country?
Yes. Because Tofacitinib Impurity R 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.

More Tofacitinib standards

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