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Substance Name: Parbendazole [USAN:INN:BAN]
RN: 14255-87-9
UNII: N4X8WVX2UG
InChIKey: YRWLZFXJFBZBEY-UHFFFAOYSA-N

Note

  • Anthelmintic used against a variety of gastrointestinal parasites.

Molecular Formula

  • C13-H17-N3-O2

Molecular Weight

  • 247.2963
 

Classification Codes

  • Anthelmintic
  • Anthelmintics
  • Anti-Infective Agents
  • Antinematodal Agents
  • Antiparasitic Agents
  • Mutation Data
  • Reproductive Effect
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Names and Synonyms

Name of Substance

  • Parbendazole
  • Parbendazole [USAN:INN:BAN]

Synonyms

  • (4-Butyl-1H-benzimidazol-2-yl)-carbamic acid methyl ester
  • 5-Butyl-2-(carbomethoxyamino)benzimidazole
  • 5-Butyl-2-benzimidazolecarbamic acid methyl ester
  • Carbamic acid, (5-butyl-1H-benzimidazol-2-yl)-, methyl ester
  • EINECS 238-133-3
  • Helatac
  • Helmatac
  • Methyl 5-butyl-2-benzimidazolecarbamate
  • N-(Butyl-5, benzimidazolyl)-2, carbamate de methyle
  • N-(Butyl-5, benzimidazolyl)-2, carbamate de methyle [French]
  • Parbendazol
  • Parbendazol [INN-Spanish]
  • Parbendazole
  • Parbendazolum
  • Parbendazolum [INN-Latin]
  • PBDZ
  • PBZ
  • SK&F 29044
  • SKF 29044
  • UNII-N4X8WVX2UG
  • Verminum
  • Worm Guard

Systematic Names

  • 2-Benzimidazolecarbamic acid, 5-butyl-, methyl ester
  • Carbamic acid, (5-butyl-1H-benzimidazol-2-yl)-, methyl ester
  • Parbendazole

Registry Numbers

CAS Registry Number

  • 14255-87-9

FDA UNII

  • N4X8WVX2UG

Other Registry Number

  • 52980-90-2

System Generated Number

  • 0014255879

Structure Descriptors

InChI

1S/C13H17N3O2/c1-3-4-5-9-6-7-10-11(8-9)15-12(14-10)16-13(17)18-2/h6-8H,3-5H2,1-2H3,(H2,14,15,16,17)

InChIKey

YRWLZFXJFBZBEY-UHFFFAOYSA-N

Smiles

CCCCc1ccc2[nH]c(NC(=O)OC)nc2c1

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
cattle LD unreported > 1200mg/kg (1200mg/kg)   Australian Veterinary Journal. Vol. 46, Pg. 297, 1970.
chicken LD50 oral > 40mg/kg (40mg/kg)   United States Patent Document. Vol. #3657267,
domestic animals - goat/sheep LDLo oral 660mg/kg (660mg/kg) GASTROINTESTINAL: ULCERATION OR BLEEDING FROM STOMACH Australian Veterinary Journal. Vol. 46, Pg. 297, 1970.
mouse LD50 oral 1700mg/kg (1700mg/kg)   Bulletin de la Societe des Sciences Veterinaires et de Medecine Comparee de Lyon. Vol. 77, Pg. 379, 1975.
rat LD50 oral > 40mg/kg (40mg/kg)   United States Patent Document. Vol. #3657267,

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 226 dec deg C   EXP
log P (octanol-water) 3.570 (none)   EST
Atmospheric OH Rate Constant 2.05E-10 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.