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2D Structure
Also known as: 26002-80-2, Sumithrin, Phenoxythrin, Phenothrine, Pibutin, Sumitrin
Molecular Formula
C23H26O3
Molecular Weight
350.4  g/mol
InChI Key
SBNFWQZLDJGRLK-UHFFFAOYSA-N
FDA UNII
707484X33X

1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
(3-phenoxyphenyl)methyl 2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropane-1-carboxylate
2.1.2 InChI
InChI=1S/C23H26O3/c1-16(2)13-20-21(23(20,3)4)22(24)25-15-17-9-8-12-19(14-17)26-18-10-6-5-7-11-18/h5-14,20-21H,15H2,1-4H3
2.1.3 InChI Key
SBNFWQZLDJGRLK-UHFFFAOYSA-N
2.1.4 Canonical SMILES
CC(=CC1C(C1(C)C)C(=O)OCC2=CC(=CC=C2)OC3=CC=CC=C3)C
2.2 Other Identifiers
2.2.1 UNII
707484X33X
2.3 Synonyms
2.3.1 MeSH Synonyms

1. (3-phenoxyphenyl)methyl Cis,trans-(+)-2,2-dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylate

2. D-phenothrin

3. Phenothrin, (1r-cis)-isomer

4. Phenothrin, (1r-trans)-isomer

5. Phenothrin, (1s-cis)-isomer

6. Phenothrin, (1s-trans)-isomer

7. Phenothrin, (cis-(+-))-isomer

8. Phenothrin, (trans-(+-))-isomer

9. S-2539

10. Sumithrin

2.3.2 Depositor-Supplied Synonyms

1. 26002-80-2

2. Sumithrin

3. Phenoxythrin

4. Phenothrine

5. Pibutin

6. Sumitrin

7. Duet

8. Anchimanaito 20s

9. Solo (insecticide)

10. Multicide 2154

11. Fenotrina

12. S 2539 (pesticide)

13. 188023-86-1

14. 3-phenoxybenzyl Chrysanthemate

15. Hegor Antipoux

16. D-phenotrhin

17. Oms 1809

18. Oms 1810

19. Pt 515

20. (3-phenoxyphenyl)methyl 2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropane-1-carboxylate

21. Nsc-758668

22. S-2539f

23. Cyclopropanecarboxylic Acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-, (3-phenoxyphenyl)methyl Ester

24. Cyclopropanecarboxylic Acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-,(3-phenoxyphenyl)methyl Ester

25. Wellcide

26. Chebi:34916

27. M-phenoxybenzyl 2,2-dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylate

28. Phenothrin (inn)

29. 2,2-dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylic Acid M-phenoxybenzyl Ester

30. 3-phenoxybenzyl 2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropanecarboxylate

31. 3-phenoxybenzyl 2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate

32. 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic Acid (3-phenoxyphenyl)methyl Ester

33. Phenothrin 10 Microg/ml In Isooctane

34. (-)-trans-phenothrin

35. Ncgc00094561-01

36. Phenothrin [inn]

37. 707484x33x

38. Benzyl Alcohol, M-phenoxy-, 2,2-dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylate

39. Cyclopropanecarboxylic Acid, 2,2-dimethyl-3-(2-methylpropenyl)-, M-phenoxybenzyl Ester

40. Dsstox_cid_12688

41. Dsstox_rid_79033

42. Dsstox_gsid_32688

43. Fenotrina [spanish]

44. Phenothrine [french]

45. Phenothrinum [latin]

46. Caswell No. 652b

47. Phenothrinum

48. Phenothrin [inn:ban]

49. Phenothrine [iso-french]

50. Phenothrin [iso]

51. Cas-26002-80-2

52. Ccris 2502

53. Multicide Concentrate F-2271

54. Hsdb 3922

55. Phenothrin [bsi:iso]

56. Einecs 247-404-5

57. S-2539

58. Ent 27 972

59. Epa Pesticide Chemical Code 069005

60. Phonothrin

61. Delta-(cis-trans)-phenothrin

62. Ai3-29062

63. 3-phenoxybenzyl (+-)-cis-trans-chrysanthemate

64. (r)-phenothrin

65. 3-phenoxybenzyl (1rs)-cis,trans-chrysanthemate

66. 3-phenoxybenzyl 2-dimethyl-3-(methylpropenyl)cyclopropanecarboxylate

67. Unii-707484x33x

68. Hegor Antipoux (tn)

69. Spectrum_001981

70. Phenothrin [mi]

71. Specplus_000796

72. Phenothrin [jan]

73. Spectrum3_001204

74. Spectrum4_000583

75. Spectrum5_000644

76. Phenothrin [hsdb]

77. Phenothrin [mart.]

78. (3-phenoxyphenyl)methyl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate

79. 3-phenoxybenzyl (1rs)-cis,trans-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate

80. 3-phenoxybenzyl (1rs,3rs;1rs,3sr)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate

81. Phenothrin [who-dd]

82. Schembl74649

83. Bspbio_002588

84. Kbiogr_001046

85. Kbioss_002547

86. Mls004712075

87. Divk1c_006892

88. Spectrum1504098

89. Delta -(cis-trans)-phenothrin

90. Chembl1322884

91. Dtxsid7032688

92. Kbio1_001836

93. Kbio2_002538

94. Kbio2_005106

95. Kbio2_007674

96. Kbio3_002088

97. Hms1922b17

98. Pharmakon1600-01504098

99. Bba00280

100. Hy-b1072

101. Tox21_111297

102. Tox21_301570

103. Ccg-38960

104. Nsc758668

105. Akos015914551

106. Phenothrin 100 Microg/ml In Methanol

107. Tox21_111297_1

108. Cs-4628

109. Db13717

110. Nsc 758668

111. M-phenoxybenzyl (+-)-cis,trans-2,2-dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylate

112. Phenothrin 1000 Microg/ml In Methanol

113. Ncgc00094561-02

114. Ncgc00094561-03

115. Ncgc00094561-04

116. Ncgc00094561-06

117. Ncgc00255299-01

118. As-76801

119. Cyclopropanecarboxylic Acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-, 3-(phenoxyphenyl)methyl Ester

120. Cyclopropanecarboxylic Acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-, 3-(phenoxyphenyl)methyl Ester, Cis,trans-(+/-)-

121. Smr001563205

122. 3-phenoxybenzyl-d-cis.trans-chrysanthemate

123. Sbi-0051922.p002

124. Db-046812

125. Db-046822

126. Ft-0630520

127. Ft-0630521

128. Sw220054-1

129. Phenothrin, Pestanal(r), Analytical Standard

130. D08357

131. S 2539

132. Ab00052445_02

133. Ab00052445_03

134. 002p802

135. A818137

136. Q999813

137. Sr-01000872757

138. J-016219

139. Sr-01000872757-1

140. Brd-a22106989-001-01-9

141. Brd-a22106989-001-02-7

142. (3-phenoxyphenyl)methyl 2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate

143. 2,2-dimethyl-3-(2-methylpropenyl-1)cyclopropancarbonic Acid, 3-phenoxybenzyl Ester

144. 3-phenoxybenzyl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate #

145. 3-phenoxybenzyl 2,2-dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylate

146. 3-phenoxyphenylmethyl 2,2-dimethyl- 3-(2-methyl-1-propenyl)cyclopropanecarboxylate

147. Cyclopropanecarboxylic Acid,2,2-dimethyl-3-(2-methylpropen-1-yl), 3-phenoxybenzyl Ester

148. 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic Acid (3-phenoxy-phenyl)methyl Ester

149. M-phenoxybenzyl (+/-)-cis,trans-2,2-dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylate

2.4 Create Date
2005-03-25
3 Chemical and Physical Properties
Molecular Weight 350.4 g/mol
Molecular Formula C23H26O3
XLogP36.2
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count3
Rotatable Bond Count7
Exact Mass350.18819469 g/mol
Monoisotopic Mass350.18819469 g/mol
Topological Polar Surface Area35.5 Ų
Heavy Atom Count26
Formal Charge0
Complexity512
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count2
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Therapeutic Uses

Pyrethrins with piperonyl butoxide are used for topical treatment of pediculosis (lice infestations). Combinations of pyrethrins with piperonyl butoxide are not effective for treatment of scabies (mite infestations). Although there are no well-controlled comparative studies, many clinicians consider 1% lindane to be pediculicide of choice. However, some clinicians recommend use of pyrethrins with piperonyl butoxide, esp in infants, young children, & pregnant or lactating women ... . If used correctly, 1-3 treatments ... are usually 100% effective ... Oil based (eg, petroleum distillate) combinations ... produce the quickest results. ... For treatment of pediculosis, enough gel, shampoo, or solution ... should be applied to cover affected hair & adjacent areas ... After 10 min, hair is ... washed thoroughly ... treatment should be repeated after 7-10 days to kill any newly hatched lice. /Pyrethrins/

McEvoy, G.K. (ed.). American Hospital Formulary Service - Drug Information 2000.Bethesda, MD: American Society of Health-System Pharmacists, Inc. 2000 (Plus Supplements)., p. 3203


One hundred and one subjects with head louse infestation were entered into two separate studies, in which a phenothrin aqueous/alcoholic lotion was compared to a carbaryl lotion and a malathion lotion. Fifty subjects were treated with a single application of the phenothrin lotion, 28 with the carbaryl lotion and 23 with the malathion lotion. In the comparative study of the phenothrin and malathion lotions an inspection on the day following treatment showed no live lice remained, but that six of the subjects treated with malathion lotion still had evidence of viable eggs (p < 0.05). In one subject viable eggs were still evident at two weeks post-treatment. There were no cases, however, of live lice or viable eggs at four weeks post-treatment. Mild cutaneous side-effects were reported in five subjects, the incidence of which was not significantly different by treatment group. One subject in the phenothrin and carbaryl lotion comparative study had evidence of live lice at one week post-treatment with phenothrin lotion. This subject received no further treatment and was clear of both live lice and viable eggs at subsequent visits. A separate case of live lice infestation was found at two weeks post-treatment in a subject treated with phenothrin lotion and at four weeks post-treatment in two subjects treated with carbaryl lotion. As these subjects were free of live lice infestation at previous follow-up visits it was highly probable that these were cases of re-infestation from another source.

PMID:1903813 Doss S et al; J R Soc Health 111 (2): 47-50 (1991)


5 Pharmacology and Biochemistry
5.1 MeSH Pharmacological Classification

Insecticides

Pesticides designed to control insects that are harmful to man. The insects may be directly harmful, as those acting as disease vectors, or indirectly harmful, as destroyers of crops, food products, or textile fabrics. (See all compounds classified as Insecticides.)


5.2 ATC Code

P - Antiparasitic products, insecticides and repellents

P03 - Ectoparasiticides, incl. scabicides, insecticides and repellents

P03A - Ectoparasiticides, incl. scabicides

P03AC - Pyrethrines, incl. synthetic compounds

P03AC03 - Phenothrin


5.3 Absorption, Distribution and Excretion

Dermal adsorption of (+)trans- and (+)cis-phenothrin into body of male rats from dust or emulsifiable concentrate (EC) was estimated to be 3-7% and 8-17%. The rate of absorption was 4-5 times faster with EC than with dust and T/2 in blood was 2-3 times longer.

Kaneko H et al; Nippon Noyaku Gakkaishi (J Pestic Sci) 6 (2): 169-82 (1981)


(14)C-phenothrin labeled at the hydroxymethyl group of the alcohol moiety was orally admin at ... 200 mg/kg to male Sprague-Dawley rats. Absorption and elimination was rapid. About 60% of radioactivity was eliminated in urine and 40% in feces in 3 days. In addn to phenothrin, 3-phenoxybenzyl alcohol and 3-phenoxybenzoic acid were found in brain, liver, kidney, and blood. Unidentified water and ether solubles were also present.

Menzie, C.M. Metabolism of Pesticides, Update II. U.S. Department of the Interior, Fish Wildlife Service, Special Scientific Report - Wildlife No. 2l2. Washington, DC: U.S. Government Printing Office, 1978., p. 238


Dermal adsorption of (+)trans- and (+)cis-phenothrin into body of male rats from dust or emulsifiable concentrate (EC) was estimated to be 3-7% and 8-17%. Rate of absorption was 4-5 times faster with EC than with dust. Amount absorbed through skin was almost completely excreted into urine and feces within 6 days. When admin once orally, at rate of 2 mg/kg (either isomer), about 96% of dose was recovered in excreta during following 6 days. A larger amt of (+)cis-isomer was excreted in feces than (+)trans-isomer and a larger amt of (+)trans-isomer was excreted in urine than (+)-cis-isomer.

Kaneko H, et al; Nippon Noyaku Gakkaishi (J Pestic Sci) 6 (2): 169-82 (1981)


The tissue residues in rats 7 days after a single oral dose of (14)C-(1R,cis)- or (14)C-(1R,trans)-phenothrin at 10 mg/kg body weight were generally very low although the fat showed somewhat higher residue levels (1-2.5 mg/kg). Similarly, high 14C residue levels (up to 23 mg/kg) were found in the fat, 7 days after a single oral dose of the [1R,cis] isomer at 200 mg/kg body weight.

WHO; Environmental Health Criteria 96: Phenothrin p.29 (1990)


For more Absorption, Distribution and Excretion (Complete) data for PHENOTHRIN (13 total), please visit the HSDB record page.


5.4 Metabolism/Metabolites

(14)C-Phenothrin ... was orally admin at ... 200 mg/kg to male Sprague-Dawley rats. ... Urine contained low levels of 3-phenoxybenzoic acid and its glycine conjugate and some ether and water sol material. In addn ... 3-(4'-hydroxyphenoxy)benzoic acid was present and accounted for 42.3% of radioactivity ... This cmpd was ... major metab in feces but accounted for only 11.9% of ... radioactivity. In addn to unchanged phenothrin and unidentified water and ether solubles, feces contained 3-phenoxybenzoic acid and the glycine conjugate. 3-phenoxybenzyl alcohol was not observed in urine or feces.

Menzie, C.M. Metabolism of Pesticides, Update II. U.S. Department of the Interior, Fish Wildlife Service, Special Scientific Report - Wildlife No. 2l2. Washington, DC: U.S. Government Printing Office, 1978., p. 238


Dermal and oral admin of (+)trans- and (+)cis-phenothrin to male rats from dust or emulsifiable concentrate produced nearly the same metabolites. Major metabolites from (+)trans-isomer were 3-phenoxybenzoic acid and its glycine conjugate and (3,4'-hydroxyphenoxy)benzoic acid and its sulfate. The cis-isomer gave larger amounts of ester metabolites.

Kaneko H et al; Nippon Noyaku Gakkaishi (J Pestic Sci) 6 (2): 169-82 (1981)


When [1R,trans]-phenothrin was given to rats at 4, 10, or 200 mg/kg body weight (oral single dose) or 4 mg/kg body weight (repetitive oral dose for 14 days), the sulfate conjugate of 4'-OH-phenoxy benzoic acid was predominant, accounting for 28, 43, 28, and 55%, respectively, of the dose. In addition, phenoxy benzoic acid (4, 10, 5, and 6%), its glycine conjugate (1,3,2, and 2%) and glucuronide (2,3,1, and 3%), and free 4'-OH-phenoxybenzoic acid (2,11,3, and 3%) were found. The sulfate conjugate of 3-(2'-hydroxyphenoxy)benzoic acid (2'-OH-PBacid) was also found as a minor metabolite.

WHO; Environmental Health Criteria 96: Phenothrin p.29 (1990)


When Sprague Dawley rats were administered a single oral dose of [1R,trans]-phenothrin at 4 or 200 mg/kg body weight level or given an oral dose of 4 mg/kg body weight per day for 14 days, unmetabolized compound was found in the feces (44-45, 44-60, and 14-16% of the dose, respectively). An ester-form metabolite, the 4'-hydroxy phenoxy benzoic acid derivative of trans-phenothrin, was also detected (0.4-0.6%).

WHO; Environmental Health Criteria 96: Phenothrin p.30 (1990)


For more Metabolism/Metabolites (Complete) data for PHENOTHRIN (14 total), please visit the HSDB record page.


5.5 Mechanism of Action

Following absorption through the chitinous exoskeleton of arthropods, pyrethrins stimulate the nervous system, apparently by competitively interfering with cationic conductances in the lipid layer of nerve cells, thereby blocking nerve impulse transmissions. Paralysis and death follow. /Pyrethrins/

McEvoy, G.K. (ed.). American Hospital Formulary Service - Drug Information 2000.Bethesda, MD: American Society of Health-System Pharmacists, Inc. 2000 (Plus Supplements)., p. 3203


Some synthetic pyrethroids given intravenously to rats cause either tremor (T-syndrome) or choreoathetosis with salivation (CS-syndrome). However, d-phenothrin (>600 mg/kg body weight) injected intravenously into the lateral tail vein caused neither T-syndrome nor CS syndrome, due to its very low acute toxicity. From a study involving intracerebral dosing with [1R,cis]- or [1R, trans]-phenothrin in mice, both compounds were classified as Type I pyrethroids based on the occurrence of tremors and on neurophysiological studies in cockroach cercal sensory nerves.

WHO; Environmental Health Criteria 96: Phenothrin p.43 (1990)


The effects of 4 different pyrethroid insecticides on sodium channel gating in internally perfused, cultured mouse neuroblastoma cells (N1E-115) were studied using the suction pipette, voltage clamp technique. Pyrethroids increased the amplitude of the sodium current, sometimes by more than 200%. Activation of the sodium current occurred at more hyperpolarized potentials than under control conditions. The declining phase of the sodium current during depolarization was markedly slowed down and after repolarization of the membrane a large, slowly decaying sodium tail current developed. Pyrethroids did not affect the sodium current reversal potential, steady-state sodium inactivation or recovery from sodium channel inactivation. The amplitude of the pyrethroid-induced slow tail current was always proportional to the sodium current at the end of the preceding depolarizing pulse. The rate of decay of the slow tail current strongly depended on pyrethroid structure and increased in the order deltamethrin, cyphenothrin, fenfluthrin and phenothrin. The rate of decay further depended on membrane potential and temperature. Below -85 m V the instantaneous current-voltage relationship of the slow tail current showed a negative slope conductance. The tail current decayed more slowly at low temperatures. Arrhenius plots indicated that the relaxation of open sodium channels to a closed state involved a higher energy barrier for pyrethroid-affected than for normal channels. The energy barrier was higher after deltamethrin than after the non-cyano pyrethroid fenfluthrin. It is concluded that in mammalian neuronal membrane pyrethroids selectively reduce the rate of closing of sodium channels both during depolarization and after repolarization of the nerve membrane.

PMID:2449265 Ruigt GS et al; Brain Res 437 (2): 309-22 (1987)


The synthetic pyrethroids delay closure of the sodium channel, resulting in a sodium tail current that is characterized by a slow influx of sodium during the end of depolarization. Apparently the pyrethroid molecule holds the activation gate in the open position. Pyrethroids with an alpha-cyano group (e.g., fenvalerate) produce more prolonged sodium tail currents than do other pyrethroids (eg, permethrin, bioresmethrin). The former group of pyrethroids causes more cutaneous sensations than the latter. /Synthetic pyrethroids/

Ellenhorn, M.J. and D.G. Barceloux. Medical Toxicology - Diagnosis and Treatment of Human Poisoning. New York, NY: Elsevier Science Publishing Co., Inc. 1988., p. 1081


For more Mechanism of Action (Complete) data for PHENOTHRIN (11 total), please visit the HSDB record page.