Pyrantel Pamoate CAS NO. 22204-24-6

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Pyrantel Pamoate CAS NO. 22204-24-6

Pyrantel Pamoate price

Pyrantel Pamoate CAS NO. 22204-24-6

Pyrantel Pamoate is a broad-spectrum phosphate that can be used to treat a number of parasitic infections. It is very rapidly and almost completely absorbed from the stomach and small intestine after administration, making it an excellent phosphate.

  • Item NO.:

    CAS NO. 22204-24-6
  • Color:

    Yellow to tan solid
  • Package:

    25 Kg/Drum


Pyrantel Pamoate is a yellow crystalline powder, odorless, slightly soluble in N,N-Dimethylformamide, very slightly soluble in ethanol, and almost insoluble in water.






Yellow to tan solid



The IR spectrum of the Sample agrees with IR spectrum of the Standard


The retention time of the major peaks due to pyrantel base and pamoic acid of the Sample solution correspond to the Standard solution,as obtained in the Assay


97.0%~103.0%(dried basis)

Pamoic acid(HPLC)

63.4%~67.3%(dried basis)

Residue on lgnition

Not more than 0.5%

Limit of Iron

Not more than 0.0075%





lmpurities (HPLC)




Pyrantel Related

Compound A

Not more than 0.5%

Impurity B

Not more than 0.2%

Individual Unspecified Impurities

Not more than 0.1%

Total Unspecified


Not more than 0.3%

Total Impurities

Not more than 1.0%

Loss on Drying

Not more than 2.0%





Pyrantel Pamoate application

Pyrantel Pamoate is a neuromuscular blocking agent that causes spasmodic paralysis of the worm and its elimination from the body. It also depolarises individual cells of the worm, increasing the frequency of peak potentials emitted and the muscle tone, resulting in the loss of the worm's voluntary activity.Additionally, it inhibits cholinesterase and causes acetylcholine to accumulate.This leads to its significant nicotinic-like activity.The main difference between pyrantel pamoate and piperazine is the speed of action.Pyrantel pamoate causes a rapid contraction followed by paralysis and immobility.It is effective in treating roundworms, hookworms, pinworms, and mixed infections, with the greatest efficacy against hookworms.



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