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Tox21_300982
Also known as: 51218-45-2, Yibingjiacaoan, Pennant, Codal, Dual, Dual magnum
Molecular Formula
C15H22ClNO2
Molecular Weight
283.79  g/mol
InChI Key
WVQBLGZPHOPPFO-UHFFFAOYSA-N
FDA UNII
X0I01K05X2

1 2D Structure

Tox21_300982

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
2-chloro-N-(2-ethyl-6-methylphenyl)-N-(1-methoxypropan-2-yl)acetamide
2.1.2 InChI
InChI=1S/C15H22ClNO2/c1-5-13-8-6-7-11(2)15(13)17(14(18)9-16)12(3)10-19-4/h6-8,12H,5,9-10H2,1-4H3
2.1.3 InChI Key
WVQBLGZPHOPPFO-UHFFFAOYSA-N
2.1.4 Canonical SMILES
CCC1=CC=CC(=C1N(C(C)COC)C(=O)CCl)C
2.2 Other Identifiers
2.2.1 UNII
X0I01K05X2
2.3 Synonyms
2.3.1 MeSH Synonyms

1. 2-chloro-n-(2-ethyl-6-methylphenyl)-n-(2-methoxyethyl)acetamide

2.3.2 Depositor-Supplied Synonyms

1. 51218-45-2

2. Yibingjiacaoan

3. Pennant

4. Codal

5. Dual

6. Dual Magnum

7. Dual Triple

8. Dual Ii

9. 2-chloro-n-(2-ethyl-6-methylphenyl)-n-(1-methoxypropan-2-yl)acetamide

10. Metelilachlor

11. Ontrack 8e

12. Dual 720ec

13. Dual 960 Ec

14. Dual 8e

15. 2-chloro-n-(2-ethyl-6-methylphenyl)-n-(2-methoxy-1-methylethyl)acetamide

16. N-(1-methyl-2-methoxyethyl)-n-chloroacetyl-2-ethyl-6-methylaniline

17. Cga-24705

18. Acetamide, 2-chloro-n-(2-ethyl-6-methylphenyl)-n-(2-methoxy-1-methylethyl)-

19. Cga 24705

20. Chebi:83645

21. Metolachlor-d6

22. X0i01k05x2

23. Humextra

24. Dsstox_cid_2448

25. Acetamide, 2-chloro-n-(2-ethyl-6-methylphenyl)-n-(2-methoxy-1-methylethyl)-, Stereoisomer

26. Dsstox_rid_76595

27. Dsstox_gsid_22448

28. 82535-90-8

29. Metolachlor Technical

30. Metolachlor, Analytical Standard

31. Metetilachlor

32. Metolachlore

33. Jindual

34. Metoken

35. Caswell No. 188dd

36. Metolachlore [iso-french]

37. Metolachlor [iso]

38. Cas-51218-45-2

39. Metolachlor [ansi:bsi:iso]

40. Hsdb 6706

41. Einecs 257-060-8

42. Epa Pesticide Chemical Code 108801

43. Brn 2743537

44. Unii-x0i01k05x2

45. Bicep (salt/mix)

46. Turbo (salt/mix)

47. Cga-77102

48. Metolachor

49. Primagram (salt/mix)

50. Primextra (salt/mix)

51. (as,5s)-metolachlor

52. Spectrum_001833

53. Metolaclor (salt/mix)

54. Specplus_000434

55. 2-chloro-6'-ethyl-n-(2-methoxy-1-methylethyl)acet-o-toluidide

56. Pace 6l (salt/mix)

57. Bicep 6l (salt/mix)

58. Metolachlor [mi]

59. 2-chloro-6'-ethyl-n-(2-methoxy-1-methylethyl)-o-acetotoluidine

60. 2-ethyl-6-methyl-1-n-(2-methoxy-1-methylethyl)chloroacetanilide

61. Spectrum2_001885

62. Spectrum3_000827

63. Spectrum4_000667

64. Spectrum5_001966

65. 2-aethyl-6-methyl-n-(1-methyl-2-methoxyaethyl)-chloracetanilid [german]

66. Acetamide, 2-chloro-n-(6-ethyl-o-tolyl)-n-(2-methoxy-1-methylethyl)-

67. Dual 25g (salt/mix)

68. N-(2'-methoxy-1'-methylethyl)-2'-ethyl-6'-methyl-2-chloroacetanilide

69. Metolachlor [hsdb]

70. Metolachlor, Herbicide (c15-h22-n-o2-cl)

71. 2-etylo-6-metylo-n-(1'-metylo-2'-metoksyetylo)chloroacetanilid [polish]

72. Alpha-chlor-6'-aethyl-n-(2-methoxy-1-methylaethyl)-acet-o-toluidin [german]

73. Alpha-chloro-2'-ethyl-6'-methyl-n-(1-methyl-2-methoxyethyl)-acetanilide

74. Schembl21385

75. Bspbio_002353

76. Kbiogr_001073

77. Kbioss_002338

78. Spectrum330035

79. Divk1c_006530

80. Spbio_001790

81. Chembl1884974

82. Dtxsid4022448

83. Kbio1_001474

84. Kbio2_002335

85. Kbio2_004903

86. Kbio2_007471

87. Kbio3_001853

88. 2-aethyl-6-methyl-n-(1-methyl-2-methoxyaethyl)-chloracetanilid

89. 2-etylo-6-metylo-n-(1'-metylo-2'-metoksyetylo)chloroacetanilid

90. Bca21845

91. Hy-b1871

92. Tox21_201376

93. Tox21_300982

94. Alpha-chlor-6'-aethyl-n-(2-methoxy-1-methylaethyl)-acet-o-toluidin

95. Ccg-39423

96. Mfcd00055293

97. O-acetotoluidide, 2-chloro-6'-ethyl-n-(2-methoxy-1-methylethyl)-

98. 2-chloro-n-(2-ethyl-6-methyl-phenyl)-n-(2-methoxy-1-methyl-ethyl)acetamide

99. Akos015888371

100. Metolachlor 100 Microg/ml In Methanol

101. Acetamide, 2-chloro-n-(2-ethyl-6-methylphenyl)-n-((1s)-2-methoxy-1-methylethyl)-, (n(s))-

102. Metolachlor 1000 Microg/ml In Acetone

103. Metolachlor 10 Microg/ml In Cyclohexane

104. Ncgc00095767-01

105. Ncgc00095767-02

106. Ncgc00095767-03

107. Ncgc00095767-04

108. Ncgc00095767-05

109. Ncgc00095767-06

110. Ncgc00254884-01

111. Ncgc00258927-01

112. Bs-42451

113. Metolachlor 10 Microg/ml In Acetonitrile

114. Metolachlor 100 Microg/ml In Cyclohexane

115. Metolachlor 100 Microg/ml In Acetonitrile

116. Db-051924

117. Cs-0013937

118. Ft-0630641

119. M3381

120. E84049

121. Metolachlor, Pestanal(r), Analytical Standard

122. 218m452

123. Q409598

124. Brd-a43135847-001-02-3

125. 2-chloro-2'-ethyl-6'-methyl-n-(1-methyl-2-methoxyethyl)acetanilide

126. 2-chloro-2'-ethyl-6'-methyl-n-(1-methyl-2-methoxyethyl)-acetanilide

127. 2-chloro-6-ethyl-n-(2-methoxy-1-methylethyl)acet-o-toluidide

128. 2-chloro-n-(2-ethyl-6-methyl-phenyl)-n-(1-methoxypropan-2-yl) Acetamide

129. .alpha.-chloro-2-ethyl-6-methyl-n-(1-methyl-2-methoxyethyl)acetanilide

130. Acetamide,2-chloro-n-(2-ethyl-6-methylphenyl)-n-(2-methoxy-1-methylethyl)-

131. Metolachlor Solution, 100 Mug/ml In Acetonitrile, Pestanal(r), Analytical Standard

2.4 Create Date
2005-03-25
3 Chemical and Physical Properties
Molecular Weight 283.79 g/mol
Molecular Formula C15H22ClNO2
XLogP33.1
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count6
Exact Mass283.1339066 g/mol
Monoisotopic Mass283.1339066 g/mol
Topological Polar Surface Area29.5 Ų
Heavy Atom Count19
Formal Charge0
Complexity285
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count1
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

S-metolachlor is extensively absorbed and metabolized following oral administration. Elimination is via the urine and feces. Tissue residues were highest in whole blood. /s-metolachlor/

USEPA; s-Metolachlor: s-Metolachlor Aggregate Human Health Risk Assessment. Document ID: EPA-HQ-OPP-2006-0292 p. 16 (July 13, 2006). Available from, as of February 3, 2012: https://www.regulations.gov/#!home


Selective herbicide, absorbed predominantly by the hypocotyls and shoots.

Hartley, D. and H. Kidd (eds.). The Agrochemicals Handbook. 2nd ed. Lechworth, Herts, England: The Royal Society of Chemistry, 1987., p. A278/Aug 87


Rats were administered a single oral dose (28.6 or 52.4 mg/kg) of metolachlor (purity not specified, but (14)C labeled and unlabeled metolachlor were synthesized for these experiments). The chemical was readily absorbed, since 70 to 90% of the metolachlor was excreted as metabolites within 48 hr.

USEPA; Health Advisories for 50 Pesticides p.617 (1988) NTIS PB88-245931


Data from rats given radioactive metolachlor (approximately 3.2 to 3.5 mg/kg) orally demonstrated that the chemical is rapidly metabolized. Residues in meat tissue and blood were very low and only blood contained residue levels in excess of 0.1 ppm.

USEPA; Health Advisories for 50 Pesticides p.618 (1988) NTIS PB88-245931


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


4.3 Metabolism/Metabolites

METABOLISM IN PLANTS AFTER PREEMERGENCE APPLICATION OF METOLACHLOR APPEARS TO PROCEED BY NATURAL PRODUCT CONJUGATION OF THE ACETYL-CHLORO GROUP WITH THIS BOND LINKAGE PREDOMINANT OVER OXO. FURTHER REACTION OCCURS AT THE ETHER GROUP WITH HYDROLYSIS FOLLOWED BY SUGAR CONJUGATION. FINAL METABOLITES ARE RESULTS OF DISCONJUGATION, AND ARE POLAR, AQUEOUS SOLUBLE, NONVOLATILE AS WELL AS SENSITIVE TO DEGRADATION. HYDROLYSIS PROCEDURES CONVERT THE OXO-METABOLITES TO THE DEACETYLATED DERIVATIVE AND THE THIO-METABOLITES TO A MORPHOLINE DERIVATIVE.

Weed Science Society of America. Herbicide Handbook. 5th ed. Champaign, Illinois: Weed Science Society of America, 1983., p. 314


STUDIES WITH THE ANTOR ANALOG METOLACHLOR (DUAL) WERE ALSO CONDUCTED WITH THE FUNGUS CHAETOMIUM GLOBOSUM. COMPOUNDS PRODUCED BY THIS ORGANISM WHEN INCUBATED WITH METOLACHLOR ARE: 2-CHLORO-N-(2-ETHYL-6- METHYLPHENYL)-N-(2-HYDROXY-1-METHYLETHYL)ACETAMIDE; 2-CHLORO-N-(2-ETHYL- 6-METHYLPHENYL)ACETAMIDE; N-(2-METHOXY-1-METHYLETHYL)-2-METHYL-6-VINYLANILINE; N-(2-METHOXY-1-METHYLETHYL)-2,3-DIHYDRO-7-METHYLINDOLE; 8-ETHYL-3-HYDROXY- N-(2-METHOXY-1-METHYLETHYL)-2-OXO-1,2,3,4-TETRAHYDROQUINOLINE; 8-ETHYL-3- HYDROXY-N-ISOPROPYL-2-OXO-1,2,3,4-TETRAHYDROQUINOLINE; 2-HYDROXY-N-(2- METHOXY-1-METHYLETHYL)-N-(2-METHYL-6-VINYLPHENYL)ACETAMIDE; N-(2-METHOXY- 1-METHYLETHYL)-8-METHYL-2-OXO-1,2,3,4-TETRAHYDROQUINOLINE.

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. 30


IN FUNGI, ALPHA-CHLORINE ATOMS OF THESE PESTICIDES /INCLUDING METOLACHLOR/ ARE NOT DISPLACED BY SULFHYDRYL GROUPS BUT BY HYDROXYL GROUPS ALTHOUGH THE CHLORINE ATOM OF PROPACHLOR IS DISPLACED BY A SULFHYDRYL GROUP IN THE FIRST DEGRADATION STEP IN PLANTS. DEALKYLATION, DEACYLATION, AND RING FORMATION TO FORM INDOLINES AND QUINOLINES OCCUR IN FUNGI.

Aizawa, H. Metabolic Maps of Pesticides. New York, NY: Academic Press, 1982., p. 9


Studies conducted to identify urinary and fecal metabolites in the rat indicated that metolachlor is metabolized via dechlorination, o-methylation, N-dealkylation and side-chain oxidation. Urinary metabolites included 2-ethyl-6-methylhydroxyacetanilide and N-(2-ethyl-6-methyl- phenyl)-N-(hydroxyacetyl)-DL-alanine). Fecal metabolites included 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-hydroxy-l-methylethyl) and N-(2-ethyl-6-methylphenyl)-N-(hydroxyacetyl)-DL-alamine).

USEPA; Health Advisories for 50 Pesticides p.618 (1988) NTIS PB88-245931


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


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