Pyrantel pamoate

Modify Date: 2025-08-25 15:34:59

Pyrantel pamoate Structure
Pyrantel pamoate structure
Common Name Pyrantel pamoate
CAS Number 22204-24-6 Molecular Weight 594.677
Density N/A Boiling Point 642.7ºC at 760 mmHg
Molecular Formula C34H30N2O6S Melting Point 266-267ºC
MSDS Chinese USA Flash Point 356.5ºC

 Use of Pyrantel pamoate


Pyrantel pamoate is a deworming agent in the treatment of hookworms (all species) and roundworms in domesticated animal; acts as a depolarizing neuromuscular blocking agent.

 Names

Name 4-[(3-carboxy-2-hydroxynaphthalen-1-yl)methyl]-3-hydroxynaphthalene-2-carboxylic acid,1-methyl-2-[(E)-2-thiophen-2-ylethenyl]-5,6-dihydro-4H-pyrimidine
Synonym More Synonyms

 Pyrantel pamoate Biological Activity

Description Pyrantel pamoate is a deworming agent in the treatment of hookworms (all species) and roundworms in domesticated animal; acts as a depolarizing neuromuscular blocking agent.
Related Catalog
References

[1]. Salman AB. Management of intestinal obstruction caused by ascariasis. J Pediatr Surg. 1997 Apr;32(4):585-7.

 Chemical & Physical Properties

Boiling Point 642.7ºC at 760 mmHg
Melting Point 266-267ºC
Molecular Formula C34H30N2O6S
Molecular Weight 594.677
Flash Point 356.5ºC
Exact Mass 594.182434
PSA 158.90000
LogP 6.26020
Vapour Pressure 2.13E-17mmHg at 25°C
Storage condition 0-6°C
Water Solubility <0.1 g/100 mL at 19 ºC

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
QL2287000
CAS REGISTRY NUMBER :
22204-24-6
LAST UPDATED :
199506
DATA ITEMS CITED :
14
MOLECULAR FORMULA :
C23-H16-O6.C11-H14-N2-S
MOLECULAR WEIGHT :
594.72
WISWESSER LINE NOTATION :
L66J CQ DVQ B1- BL66J CQ DVQ &T6N CN AUTJ C1 B1U1- BT5SJ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD - Lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>24 gm/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity)
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
535 mg/kg
TOXIC EFFECTS :
Behavioral - convulsions or effect on seizure threshold Behavioral - changes in motor activity (specific assay) Lungs, Thorax, or Respiration - respiratory stimulation
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
6600 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD - Lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
>24 gm/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity)
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
620 mg/kg
TOXIC EFFECTS :
Behavioral - convulsions or effect on seizure threshold Behavioral - changes in motor activity (specific assay) Lungs, Thorax, or Respiration - respiratory stimulation
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
4 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
1800 mg/kg
SEX/DURATION :
female 9-14 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
60 mg/kg
SEX/DURATION :
female 1-6 day(s) after conception
TOXIC EFFECTS :
Reproductive - Maternal Effects - parturition
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
180 mg/kg
SEX/DURATION :
female 1-6 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured before birth)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
60 mg/kg
SEX/DURATION :
female 7-12 day(s) after conception
TOXIC EFFECTS :
Reproductive - Maternal Effects - parturition
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
140 mg/kg
SEX/DURATION :
female 7-20 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Newborn - stillbirth

MUTATION DATA

TYPE OF TEST :
Gene conversion and mitotic recombination
TEST SYSTEM :
Yeast - Saccharomyces cerevisiae
DOSE/DURATION :
5 mmol/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 187,79,1987 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X3221 No. of Facilities: 748 (estimated) No. of Industries: 2 No. of Occupations: 7 No. of Employees: 7070 (estimated) No. of Female Employees: 3365 (estimated)

 Safety Information

Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS QL2287000
HS Code 2934999090

 Preparation


 Customs

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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 Synonyms

Embovin
Combantrin
4,4'-methanediylbis(3-hydroxynaphthalene-2-carboxylic acid) - 1-methyl-2-[(E)-2-(thiophen-2-yl)ethenyl]-1,4,5,6-tetrahydropyrimidine (1:1)
Pyrantel embonate
MFCD00072037
pyrantel ptamoate
UNII-81BK194Z5M
Antiminth
2-Naphthalenecarboxylic acid, 4,4'-methylenebis[3-hydroxy-, compd. with 1,4,5,6-tetrahydro-1-methyl-2-[(E)-2-(2-thienyl)ethenyl]pyrimidine (1:1)
4,4'-Methylenebis(3-hydroxy-2-naphthoic acid) - 1-methyl-2-[(E)-2-(2-thienyl)vinyl]-1,4,5,6-tetrahydropyrimidine (1:1)
CP-10,423-16
EINECS 244-837-1
Pyrantel pamoate
Pyrantel (pamoate)
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