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AM020685
Also known as: 23564-05-8, Thiophanate methyl, Thiophanate m, Methylthiofanate, Methylthiophanate, Mildothane
Molecular Formula
C12H14N4O4S2
Molecular Weight
342.4  g/mol
InChI Key
QGHREAKMXXNCOA-UHFFFAOYSA-N
FDA UNII
K4N81R84L8

Nematocide used in livestock; also has fungicidal properties.
1 2D Structure

AM020685

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
methyl N-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate
2.1.2 InChI
InChI=1S/C12H14N4O4S2/c1-19-11(17)15-9(21)13-7-5-3-4-6-8(7)14-10(22)16-12(18)20-2/h3-6H,1-2H3,(H2,13,15,17,21)(H2,14,16,18,22)
2.1.3 InChI Key
QGHREAKMXXNCOA-UHFFFAOYSA-N
2.1.4 Canonical SMILES
COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC
2.2 Other Identifiers
2.2.1 UNII
K4N81R84L8
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Bis-thioallophanate, Dimethylphenylene

2. Cercobin M 70

3. Cercobin M-70

4. Cercobin M70

5. Dimethylphenylene Bis Thioallophanate

6. Dimethylphenylene Bis-thioallophanate

7. Mildothane

8. Thiophanate

9. Thiophanate Methyl

2.3.2 Depositor-Supplied Synonyms

1. 23564-05-8

2. Thiophanate Methyl

3. Thiophanate M

4. Methylthiofanate

5. Methylthiophanate

6. Mildothane

7. Methyl Topsin

8. Methyl Thiophanate

9. Caligran

10. Neotopsin

11. Metoben

12. Fungo

13. Cercobin Methyl

14. Topsin Methyl

15. Topsin M

16. Cycosin

17. Thiopan

18. Easout

19. Enovit Methyl

20. Enovit Super

21. Cercobin M

22. Enovit M

23. Sipcaplant

24. Sipcasan

25. Sipcavit

26. Trevin

27. Ditek

28. Rilon

29. Topsin Nf-44

30. Topsin Wp Methyl

31. Pelt 14

32. Fungo 50

33. Nf 44

34. O-bis(3-methoxycarbonyl-2-thioureido)benzene

35. Tiofanate Metile

36. 1,2-bis(methoxycarbonylthioureido)benzene

37. Methyl N-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate

38. Topsin Turf And Ornamentals

39. Bas 32500f

40. Dimethyl 4,4'-o-phenylenebis(3-thioallophanate)

41. Td 1771

42. Pei 190

43. F 6385

44. 1,2-di-(3-methoxycarbonyl-2-thioureido)benzene

45. 1,2-bis(3-(methoxycarbonyl)-2-thioureido)benzene

46. Dimethyl 4,4-o-phenylene-bis (3-thiophanate)

47. Pelt 44

48. Chebi:35014

49. K4n81r84l8

50. 1,2-bis[3-(methoxycarbonyl)-2-thioureido]benzene

51. Carbamic Acid, (1,2-phenylenebis(iminocarbonothioyl))bis-, Dimethyl Ester

52. Dimethyl (1,2-phenylenedicarbamothioyl)biscarbamate

53. Nsc-170811

54. Allophanic Acid, 4,4'-o-phenylenebis(3-thio-, Dimethyl Ester

55. Dsstox_cid_4338

56. Topsin-m

57. Carbamic Acid, [1,2-phenylenebis(iminocarbonothioyl)]bis-, Dimethyl Ester

58. Dsstox_rid_77373

59. Dsstox_gsid_24338

60. Topsin Nf 44

61. Dimethyl (1,2-phenylenebis(iminocarbonothioyl))biscarbamate

62. Dimethyl [1,2-phenylenebis(iminocarbonothioyl)]biscarbamate

63. Caswell No. 375a

64. Allophanic Acid, 4,4'-o-phenylenebis[3-thio-, Dimethyl Ester

65. Enovit-methyl

66. Tiofanate Metile [italian]

67. Pelt-44

68. Nsc 170811

69. Cas-23564-05-8

70. Ccris 6101

71. Hsdb 6937

72. Einecs 245-740-7

73. Thiophanate-methyl [ansi:bsi:iso]

74. Thiophanate-methyl [iso]

75. Rcra Waste No. U409

76. Epa Pesticide Chemical Code 102001

77. Brn 0937942

78. Frumidor

79. Unii-k4n81r84l8

80. Ai3-27905

81. Methyl Thiophamate

82. Labilite (salt/mix)

83. Cercobin-m

84. Spot Kleen

85. Spectrum_001761

86. Specplus_000748

87. Dimethyl ((1,2-phenylene)bis-(iminocarbonothioyl))bis(carbamate)

88. Spectrum2_000646

89. Spectrum3_001211

90. Spectrum4_000096

91. Spectrum5_001330

92. Thiophanate, Methyl Ester

93. Schembl41622

94. Bspbio_002622

95. Kbiogr_000392

96. Kbioss_002242

97. Mls002207244

98. Bidd:er0424

99. Divk1c_006844

100. Spectrum1503974

101. Spbio_000651

102. Chembl487187

103. Dtxsid1024338

104. Schembl22261863

105. Kbio1_001788

106. Kbio2_002241

107. Kbio2_004809

108. Kbio2_007377

109. Kbio3_002122

110. Thiophanate-methyl [hsdb]

111. Nf-44

112. Amy22462

113. Dimethyl ((1,2-phenylene)bis(iminocarbonothioyl))bis(carbamate)

114. Hy-b0842

115. Zinc3872305

116. Tox21_201679

117. Tox21_300830

118. Ccg-39648

119. Mfcd00055294

120. Nsc170811

121. Stk366090

122. Akos005443059

123. Carbamic Acid, (1,2-phenylenebis(iminocarbonothioyl)bis-, Dimethyl Ester

124. Ncgc00091407-01

125. Ncgc00091407-02

126. Ncgc00091407-03

127. Ncgc00091407-04

128. Ncgc00091407-05

129. Ncgc00091407-06

130. Ncgc00091407-07

131. Ncgc00091407-08

132. Ncgc00254734-01

133. Ncgc00259228-01

134. Ac-12584

135. As-14875

136. Smr000778087

137. Db-046179

138. Cs-0012854

139. Ft-0630502

140. T3986

141. Thiophanate O,o-dimethyl Analog [mi]

142. Bis[(3-methoxycarbonyl)-2-thioureido]benzene

143. E78643

144. Pesticide2_thiophanate-methyl_c12h14n4o4s2_

145. Ab00052398_04

146. 564t058

147. A816770

148. Dimethyl 4,4'-o-phenylene-bis[3-thioallophanate]

149. Q126625

150. Thiophanate-methyl 100 Microg/ml In Acetonitrile

151. Dimethyl 4,4'-(o-phenylene)bis(3-thioallophanate)

152. W-110573

153. Brd-k90168339-001-02-9

154. Brd-k90168339-001-04-5

155. Dimethyl (benzene-1,2-diyldicarbamothioyl)biscarbamate

156. Thiophanate-methyl, Pestanal(r), Analytical Standard

157. Allophanic Acid,4'-o-phenylenebis[3-thio-, Dimethyl Ester

158. Allophanic Acid, 4,4'-o-phenylenebis*3-thio-, Dimethyl Ester

159. Dimethyl N,n'-[1,2-phenylenebis(azanediylcarbonothioyl)]dicarbamate

160. Dimethyl N,n'-[1,2-phenylenebis(iminocarbonothioyl)]bis[carbamate]

161. Carbamic Acid,2-phenylenebis(iminocarbonothioyl)]bis-, Dimethyl Ester

162. Carbamic Acid, N,n'-(1,2-phenylenebis(iminocarbonothioyl))bis-, C,c'-dimethyl Ester

163. Methyl [2-(([(methoxycarbonyl)amino]carbothioyl)amino)anilino]carbothioylcarbamate #

164. N-[[2-[[(methoxycarbonylamino)-sulfanylidenemethyl]amino]anilino]-sulfanylidenemethyl]carbamic Acid Methyl Ester

2.4 Create Date
2005-03-25
3 Chemical and Physical Properties
Molecular Weight 342.4 g/mol
Molecular Formula C12H14N4O4S2
XLogP32.6
Hydrogen Bond Donor Count4
Hydrogen Bond Acceptor Count6
Rotatable Bond Count4
Exact Mass342.04564729 g/mol
Monoisotopic Mass342.04564729 g/mol
Topological Polar Surface Area165 Ų
Heavy Atom Count22
Formal Charge0
Complexity407
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

Fungicides, Industrial

Chemicals that kill or inhibit the growth of fungi in agricultural applications, on wood, plastics, or other materials, in swimming pools, etc. (See all compounds classified as Fungicides, Industrial.)


Anthelmintics

Agents that kill parasitic worms. They are used therapeutically in the treatment of HELMINTHIASIS in man and animal. (See all compounds classified as Anthelmintics.)


Antinematodal Agents

Substances used in the treatment or control of nematode infestations. They are used also in veterinary practice. (See all compounds classified as Antinematodal Agents.)


4.2 Absorption, Distribution and Excretion

Nearly all thiophanate-methyl is eliminated from the body in 24 hr; that left in tissues after 24 hr is largely eliminated within 96 hr.

Hayes, W.J., Jr., E.R. Laws, Jr., (eds.). Handbook of Pesticide Toxicology. Volume 3. Classes of Pesticides. New York, NY: Academic Press, Inc., 1991., p. 1457


Thiophanate-methyl was efficiently absorbed, and rapidly excreted. There was evidently some saturability of uptake processes and lengthening of elimination half-life at high dose levels or following sustained low dose exposures. Blood levels diminished quickly, and tissue levels were very low by day 4 (post-exposure) in all cases.

California Environmental Protection Agency/Department of Pesticide Regulation; Toxicology Data Review Summary for Thiophanatemethyl (23564-05-8). Available from, as of May 11, 2009: https://www.cdpr.ca.gov/docs/risk/toxsums/toxsumlist.htm


4.3 Metabolism/Metabolites

Studies in mice with four radioactive forms of the molecule (14C in the ring or as the thiourea carbon of the methyl carbon and 35S) showed that the C=S bond was cleaved to a great extent prior to absorption from the gastrointestinal tract. Some of the methyl carbon apparently is metabolized to carbon dioxide. The major urinary metabolites are carbendazim and its 6-hydroxy derivative; these are excreted as O- or N-glucuronides. A compound in which the two =S's of thiophanate-methyl are replaced by =O's is a minor metabolite. Some other metabolites detectable by thin-layer chromatography of radioactive material remain unidentified.

Hayes, W.J., Jr., E.R. Laws, Jr., (eds.). Handbook of Pesticide Toxicology. Volume 3. Classes of Pesticides. New York, NY: Academic Press, Inc., 1991., p. 1457


... Primary metabolic changes included hydrolysis of side chain extremities, closure of remaining side chain portions, and oxidation of the phenyl moiety, producing a methyl hydroxybenzimidazolyl carbamate. The primary urinary metabolite was conjugated with sulfate. Fecal residues were largely thiophanate-methyl and a phenyl ring hydroxylated product.

California Environmental Protection Agency/Department of Pesticide Regulation; Toxicology Data Review Summary for Thiophanatemethyl (23564-05-8). Available from, as of May 11, 2009: https://www.cdpr.ca.gov/docs/risk/toxsums/toxsumlist.htm


4.4 Mechanism of Action

As a class of compounds, thiocarbamates do not produce consistent cholinesterase inhibition patterns. In the rat subchronic toxicity study, serum cholinesterase activity was increased in males by 22-38% relative to controls but decreased in females by 25-28% at >/= 293.2 mg/kg/day. In the rat chronic toxicity/carcinogenicity study, males showed increases in serum ChE at 280.6 mg/kg/day (HDT) at 6 and 12 months (41-42%) whereas at 24 months, it was decreased (-38%). ChE activity in females was slightly decreased (18035%) at 6 and 12 months at >/= 63.5 mg/kg/day ... /thiocarbamates/

USEPA, Office of Prevention, Pesticides, and Toxic Substances; Revised HED Human Health Risk Assessment for Thiophanate-methyl (23564-05-8) (April 2002). EPA Docket No.: EPA-HQ-OPP-2004-0265-0010.


In order to characterize the mechanism of thyroid tumorigenesis, a series of short term studies were undertaken to determine whether TM had antithyroid activity. These studies demonstrated that TM caused liver and thyroid enlargement, increased circulating TSH and decreased T3/T4 after 2 to 8 days' treatment with TM at 6000 ppm (equivalent to the HDT in the rat chronic toxicity/carcinogenicity study). Some liver microsomal enzymes, including UDP-glucuronosyltransferase, were increased. The effects on liver and thyroid weight were reversible, but reversibility of the alterations in circulating hormone levels and on microscopic effects were not evaluated. Supplementation of treated animals with T4 prevented thyroid enlargement and increased TSH but did not prevent liver enlargement. TM also appeared to have a mild inhibitory effect on microsomal thyroid peroxidase. These data were considered necessary to adequately support this mechanism.

USEPA, Office of Prevention, Pesticides, and Toxic Substances; Revised HED Human Health Risk Assessment for Thiophanate-methyl (23564-05-8) (April 2002). EPA Docket No.: EPA-HQ-OPP-2004-0265-0010.


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