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2D Structure
Also known as: 709-98-8, N-(3,4-dichlorophenyl)propanamide, Propanide, Propanex, Dipram, Grascide
Molecular Formula
C9H9Cl2NO
Molecular Weight
218.08  g/mol
InChI Key
LFULEKSKNZEWOE-UHFFFAOYSA-N
FDA UNII
F57I4G0520

A chlorinated anilide that is used as an herbicide.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
N-(3,4-dichlorophenyl)propanamide
2.1.2 InChI
InChI=1S/C9H9Cl2NO/c1-2-9(13)12-6-3-4-7(10)8(11)5-6/h3-5H,2H2,1H3,(H,12,13)
2.1.3 InChI Key
LFULEKSKNZEWOE-UHFFFAOYSA-N
2.1.4 Canonical SMILES
CCC(=O)NC1=CC(=C(C=C1)Cl)Cl
2.2 Other Identifiers
2.2.1 UNII
F57I4G0520
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Propagrin 36

2. Propanide

2.3.2 Depositor-Supplied Synonyms

1. 709-98-8

2. N-(3,4-dichlorophenyl)propanamide

3. Propanide

4. Propanex

5. Dipram

6. Grascide

7. Propanid

8. Stampede

9. Supernox

10. Surcopur

11. Rogue

12. Chem Rice

13. Stam

14. Synpran N

15. Cekupropanil

16. Riselect

17. Herbax

18. Strel

19. Propanamide, N-(3,4-dichlorophenyl)-

20. Prop Job

21. Montrose Propanil

22. 3',4'-dichloropropionanilide

23. Stam M-4

24. N-(3,4-dichlorophenyl)propionamide

25. Wham Ez

26. Propanilo

27. Erbanil

28. Stam F 34

29. Erban

30. Dichloropropionanilide

31. 3,4-dichloropropionanilide

32. Chem-rice

33. Prop-job

34. Stam Lv 10

35. Herbax 4e

36. Crystal Propanil-4

37. Stampede 360

38. Surpur

39. Stam 80edf

40. Bay 30130

41. Fw 734

42. Propionic Acid 3,4-dichloroanilide

43. Propanile

44. Vertac

45. Propionanilide, 3',4'-dichloro-

46. 3',4'-dichlorophenylpropionanilide

47. Nsc 31312

48. S 10165

49. Chebi:34936

50. Nsc-31312

51. Propanil 10 Microg/ml In Cyclohexane

52. F57i4g0520

53. Propanil 10 Microg/ml In Acetonitrile

54. Rosanil

55. Farmco Propanil

56. Stam Supernox

57. Herbax Technical

58. Dsstox_cid_2111

59. Drexel Prop-job

60. Stampede 3e

61. Dsstox_rid_76491

62. Dsstox_gsid_22111

63. Herbax 3e

64. Vertac Propanil 3

65. Vertac Propanil 4

66. Herbax Lv-30

67. Caswell No. 325

68. Propanil [bsi:iso]

69. Bayer 30 130

70. Propanil [iso]

71. Cas-709-98-8

72. Ccris 3009

73. Hsdb 1226

74. Propionic Acid-3,4-dichloroanilide

75. Einecs 211-914-6

76. Epa Pesticide Chemical Code 028201

77. Brn 2365645

78. Propasint

79. Arrosol

80. Dropaven

81. Propanac

82. Ai3-31382

83. Unii-f57i4g0520

84. 3,4-dichloranilid Kyseliny Propionove [czech]

85. Wham Df

86. B-30,130

87. 3,4-dichloranilid Kyseliny Propionove

88. Propanil (dcpa )

89. Spectrum_001807

90. Stam 80 Edf

91. Propanil [hsdb]

92. Specplus_000398

93. Propanil [mi]

94. Spectrum2_001878

95. Spectrum3_000819

96. Spectrum4_000659

97. Spectrum5_001948

98. Cbmicro_000482

99. Wln: Gr Bg Dmv2

100. Cambridge Id 5840989

101. Propionanilide,4'-dichloro-

102. Schembl26871

103. 3',4'-dichloropropioanilide

104. Bspbio_002317

105. Kbiogr_001037

106. Kbioss_002300

107. Spectrum330027

108. Mls002207241

109. Bidd:er0610

110. Divk1c_006494

111. Spbio_001756

112. Propanamide,4-dichlorophenyl)-

113. 3,4-dcpa

114. Chembl1222498

115. Dtxsid8022111

116. Schembl21900164

117. Kbio1_001438

118. Kbio2_002298

119. Kbio2_004866

120. Kbio2_007434

121. Kbio3_001817

122. Lfuleksknzewoe-uhfffaoysa-

123. Zinc362579

124. Hy-b2030

125. Nsc31312

126. Smsf0001373

127. Tox21_201774

128. Tox21_300848

129. Bay-30130

130. Ccg-39416

131. Fw-734

132. Propanil 100 Microg/ml In Methanol

133. Propanil 1000 Microg/ml In Acetone

134. Akos002960411

135. Cb01718

136. Cs-5217

137. Ncgc00094523-01

138. Ncgc00094523-02

139. Ncgc00094523-03

140. Ncgc00094523-04

141. Ncgc00094523-05

142. Ncgc00094523-06

143. Ncgc00094523-07

144. Ncgc00254751-01

145. Ncgc00259323-01

146. As-76229

147. Smr000778058

148. Bim-0000452.p001

149. Db-055477

150. Propionic Acid, 3,4-dichloroanilide

151. Ft-0603505

152. Propanil, Pestanal(r), Analytical Standard

153. 709p988

154. An-652/13319019

155. Q413507

156. S 10145

157. Sr-01000221575

158. Q-201627

159. Sr-01000221575-1

160. Brd-k08618283-001-02-0

2.4 Create Date
2005-03-25
3 Chemical and Physical Properties
Molecular Weight 218.08 g/mol
Molecular Formula C9H9Cl2NO
XLogP33.1
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count1
Rotatable Bond Count2
Exact Mass217.0061193 g/mol
Monoisotopic Mass217.0061193 g/mol
Topological Polar Surface Area29.1 Ų
Heavy Atom Count13
Formal Charge0
Complexity187
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Pharmacology and Biochemistry
4.1 MeSH Pharmacological Classification

Herbicides

Pesticides used to destroy unwanted vegetation, especially various types of weeds, grasses (POACEAE), and woody plants. Some plants develop HERBICIDE RESISTANCE. (See all compounds classified as Herbicides.)


4.2 Absorption, Distribution and Excretion

SD rats /were administered propanil/ in a single oral low dose (2.5 mg/kg), multiple oral low dose (2.5 mg/kg for 15 days), single oral high dose (300 mg/kg), or an intravenous dose (0.7 mg/kg in saline). The majority of the radioactivity (78-90%) was excreted in the urine, and 2-13% was excreted in the feces. Most of the radioactivity was eliminated within 24 hours for all except the high oral dose where it took 48 hours to eliminate 90%. For the i.v. data, females excreted 10% in the feces, while males excreted 2%. The carcass contained 0.18-0.71% of the radioactivity, with the liver having the highest residue.

USEPA, Office of Prevention, Pesticides, and Toxic Substances; Revised HED Human Health Risk Assessment for Propanil (709-98-8) (February 2002). EPA Docket No.: EPA-HQ-OPP-2002-0033-0014. Available from, as of May 11, 2012: https://www.regulations.gov/#!home


Repeated inhalation (rat): after exposure to concentrations of 5.6 to 0.2 mg/m3, propanil occurs in the blood, heart and spleen.

IPCS; Poisons Information Monograph 440: Propanil. (April 1990). Available from, as of May 11, 2012: https://www.inchem.org/documents/pims/chemical/pim440.htm


Five minutes after oral administration of single doses (1000 mg/kg, 650 mg/kg) to rats, propanil is detectable in blood and all tissues. Maximum accumulation in lungs, liver, kidneys, spleen, adrenals and heart occurs within 1 to 6 hours of administration.

IPCS; Poisons Information Monograph 440: Propanil. (April 1990). Available from, as of May 11, 2012: https://www.inchem.org/documents/pims/chemical/pim440.htm


Little radioactivity from labeled propanil appeared in tissues in short-duration experiments with rats, mice, & dogs; this indicates that propensity for accumulation of propanil or its metabolites in tissues is slight.

National Research Council. Drinking Water & Health Volume 1. Washington, DC: National Academy Press, 1977., p. 529


For more Absorption, Distribution and Excretion (Complete) data for PROPANIL (6 total), please visit the HSDB record page.


4.3 Metabolism/Metabolites

.../It/ is hydrolyzed by... hepatic acylamidase, forming 3,4-dichloroaniline and propionic acid. The enzyme... /is/ present in liver of rats, mice, rabbits, and dogs. Other conversions /occur/... either on propanil... or on dichloroaniline, /producing/... six metabolites in urine. These metabolites constitute about 95% of urinary products.

National Research Council. Drinking Water & Health Volume 1. Washington, DC: National Academy Press, 1977., p. 529


Rainbow trout(Salmo gairdneri) readily metabolize technical grade propanil, forming at least 10 products. One metab recovered from bile was identified as 3',4'-dichloro-2-hydroxypropionanilide or 3',4'-dichloro-3-hydroxypropionanilide. The technical grade contained 0.67 mg/g 3,3',4,4'-tetrachloroazobenzene.

PMID:6847248 Call DJ et al; Arch Environ Contam Toxicol 12 (2): 175-82 (1983)


3,4-Dichloroaniline formed when propanil was added to algal cultures during growth. Experiments showed that some non-axenic algal cultures were very active in DCA formation and that the bacterial contaminants were also active when free of algae. In these studies, the non-axenic Nostoc entophytum and the axenic Polypothrix tenius were active in DCA production.

Menzie, C.M. Metabolism of Pesticides-Update III. Special Scientific Report- Wildlife No. 232. Washington, DC: U.S.Department of the Interior, Fish and Wildlife Service, 1980., p. 461


Red Rice (Oryza sativa Leguminatae) seedlings were the source of an aryl amidase. Studies showed that this enzyme was able to hydrolyze propanil, as well as some analogs. Although active between pH 7.4 to 8.7, the optimum was 8.2. Calculations showed the Km = 2.5X10-5 and that the activity was in the order propanil >>3'Cl > propionanilide > 4'-Cl greater than or equal to 3'5'-dichloro > 2'-Cl.

Menzie, C.M. Metabolism of Pesticides-Update III. Special Scientific Report- Wildlife No. 232. Washington, DC: U.S.Department of the Interior, Fish and Wildlife Service, 1980., p. 461


For more Metabolism/Metabolites (Complete) data for PROPANIL (10 total), please visit the HSDB record page.


4.4 Biological Half-Life

In rats given up to 1000 mg/kg orally, blood concentrations are maintained for 24 hr but undetectable after 48 to 72 hr.

IPCS; Poisons Information Monograph 440: Propanil. (April 1990). Available from, as of February 16, 2005: https://www.inchem.org/documents/pims/chemical/pim440.htm


4.5 Mechanism of Action

In this study, /investigators/ examined both the direct and indirect effects of /propanil (PRN)/ exposure on /cytotoxic T lymphocytes (CTL)/ activation and effector cell function to gauge its likely impact on cell-mediated immunity. Initial experiments addressed whether PRN alters the class I major histocompatibility complex (MHC) pathway for antigen processing and presentation by antigen-presenting cells (APCs) , thereby indirectly affecting effector function. These experiments demonstrated that PRN does not impair the activation of CTLs by PRN-treated APCs. Subsequent experiments addressed whether PRN treatment of CTLs directly inhibits their activation and revealed that 1 degrees alloreactive CTLs exposed to PRN are unimpaired in their proliferative response and only marginally inhibited in their lytic activity. Surprisingly, secondary stimulation of these alloreactive CTL effectors, however, even in the absence of further PRN exposure, resulted in complete abrogation of CTL lytic function and a delayed but significant long-term effect on CTL responsiveness. These findings may have important implications for the diagnosis and clinical management of anomalies of cell-mediated immunity resulting from environmental exposure to various herbicides and other pesticides.

PMID:16835059 Full text: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1513295 Sheil JM et al; Environ Health Perspect 114 (7): 1059-64 (2006)


... Previous studies have demonstrated that treatment of the IC-21 macrophage cell line with DCPA resulted in changes of critical macrophage functions, including a decrease in cytokine production, and in the ability to phagocytize and kill bacteria. To understand the mechanism involved in the propanil induced changes, a proteomics analysis was undertaken. For this study, IC-21 cells were exposed to 100 uM propanil or ethanol (vehicle) and stimulated with lipopolysaccharide. After 30 min of exposure, cytosolic fraction was isolated and analyzed by two-dimensional gel electrophoresis. Differential statistical analysis identified 12 spots that were all decreased in the propanil exposed cells compared to vehicle. Mass spectrometry analysis was used to identify the proteins, which was later confirmed by other methods. One of these proteins, Sorting Nexin 6 (SNX6) interacts with the TGF-beta family of receptor serine-threonine kinases and associates with early endosomes during intracellular receptor trafficking. Another protein, H+-ATPase functions as a cytoplasmic pH-regulator promoting acidification of intracellular compartments in macrophages during the respiratory burst. A third protein, fibroblast growth factor regulated-1 (FR-1) protein induced by FGF-1 stimulation is important for enhancement of phagocytosis and plays a role in promoting inflammation. Confirmation of other significantly changed proteins and linking their identity to the alterations in macrophage function is currently in progress. Together the data from toxicoproteomics analysis provides an additional evidence of the mechanism by which propanil suppresses macrophage functions.

Ustyugova IV et al; Toxicol Sci 84 (1-S): 386 (2005)


Stimulation of T cells through the T-cell receptor results in the activation of a series of signaling pathways that leads to the secretion of interleukin (IL)-2 and cell proliferation. Influx of calcium (Ca(2+)) from the extracellular environment, following internal Ca(2+) store depletion, provides the elevated and sustained intracellular calcium concentration ([Ca(2+)](i)) critical for optimal T-cell activation. Our laboratory has documented that exposure to the herbicide 3,4-dichloropropionanilide (DCPA) inhibits intracellular signaling events that have one or more Ca(2+) dependent steps. Herein we report that DCPA attenuates the normal elevated and sustained [Ca(2+)](i) that follows internal store depletion in the human leukemic Jurkat T cell line and primary mouse T cells. DCPA did not alter the depletion of internal Ca(2+) stores when stimulated by anti-CD3 or thapsigargin demonstrating that early inositol 1,4,5-triphosphate-mediated signaling and depletion of Ca(2+) stores were unaffected. 2-Aminoethyldiphenol borate (2-APB) is known to alter the store-operated Ca(2+) (SOC) influx that follows Ca(2+) store depletion. Exposure of Jurkat cells to either DCPA or 50 uM 2-APB attenuated the increase in [Ca(2+)](i) following thapsigargin or anti-CD3 induced store depletion in a similar manner. At low concentrations, 2-APB enhances SOC influx but this enhancement is abrogated in the presence of DCPA. This alteration in [Ca(2+)](i), when exposed to DCPA, significantly reduces nuclear levels of nuclear factor of activated T cells (NFAT) and IL-2 secretion. The plasma membrane polarization profile is not altered by DCPA exposure. Taken together, these data indicate that DCPA inhibits T-cell activation by altering Ca(2+) homeostasis following store depletion.

PMID:18281253 Lewis TL et al; Toxicol Sci 103 (1): 97-107 (2008)


Toxic signs after ip doses of 200 to 800 mg/kg of the herbicide propanil in mice included central nervous system depression, loss of reflex, cyanosis and death at the higher doses. Pretreatment with tri-o-cresylphosphate (triorthotolyl phosphate, TOTP), an esterase inhibitor, prevented cyanosis but slightly enhanced the CNS depressant actions of propanil. Propanil and a probable hydrolytic metabolite, 3,4-dichloroaniline (DCA), produced methemoglobinemia in mice. Comparison of the time- and dose-response relationships for equimolar doses of propanil and DCA showed that DCA was more potent and had a faster onset of methemoglobin production than propanil. The hydrolysis of propanil to yield 3,4-dichloroaniline by liver homogenates was completely inhibited 18 hr after mice were given 125 mg/kg of TOTP. Methemoglobin formation after propanil was inhibited in mice pretreated with 125 mg/kg of TOTP, but TOTP did not affect DCA-induced methemoglobinemia. Inhibition of propanil-amidase activity and propanil-induced methemoglobinemia had similar TOTP dose- and time-response relationships. Pretreatment with SKF-525A inhibited and phenobarbital pretreatment slightly increased both propanil- and DCA-induced methemoglobin formation. Neither pretreatment affected normal liver propanilamidase activity.

PMID:4714336 Murphy SD, Singleton SD; Toxicol Appl Pharmacol 25 (1): 20-29 (1973)