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PHR1798 Supelco

Levamisole Hydrochloride

Pharmaceutical Secondary Standard; Certified Reference Material

Synonym: (−)-Tetramisole hydrochloride, (S)-(−)-6-Phenyl-2,3,5,6-tetrahydroimidazo[2,1-b]thiazole hydrochloride, L(−)-2,3,5,6-Tetrahydro-6-phenylimidazo[2,1-b]thiazole hydrochloride, Levamisole hydrochloride

  • CAS Number 16595-80-5

  • Empirical Formula (Hill Notation) C11H12N2S · HCl

  • Molecular Weight 240.75

  •  Beilstein/REAXYS Number 4358988

  •  EC Number 240-654-6

  •  MDL number MFCD00012675

  •  NACRES NA.24



Related Categories Analytical Standards, Analytical/Chromatography, K-O, Pharmaceutical Secondary Standards, Pharmacopeia & Metrological Institutes Standards More...
Quality Level   300
grade   certified reference material
  pharmaceutical secondary standard
packaging   pkg of 250 mg
mp   228-230 °C
Featured Industry   Pharmaceutical (small molecule)
format   neat
pharmacopeia traceability   traceable to BP 212
  traceable to PhEur L0380000
  traceable to USP 1359302


General description

Pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards


Levamisole Hydrochloride may be used as a pharmaceutical reference standard for the determination of the analyte in pharmaceutical formulations by potentiometric sensing, spectrometric and atomic absorption spectroscopy methods.

These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.

Biochem/physiol Actions

Shows both immunostimulant and immunosuppressant effects, depending on several controllable factors. Very effective in treatment of ascariasis (hookworm infestation). Useful in chemotherapy of colorectal cancers, possibly due to its stimulation of IL-1 production and direct activation of macrophages.

Analysis Note

These secondary standards offer multi-traceability to the USP, EP and BP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.


To see an example of a Certificate of Analysis for this material enter LRAC3172 in the Documents slot below. This is an example certificate only and may not be the lot that you receive.

Safety & Documentation

Safety Information

UN 2811 6.1 / PGIII


Certificate of Analysis (COA)

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Protocols & Articles
Peer-Reviewed Papers


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