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2D Structure
Also known as: 1071-83-6, N-(phosphonomethyl)glycine, Roundup, N-phosphonomethyl-glycine, Glyphosphate, 2-(phosphonomethylamino)acetic acid
Molecular Formula
C3H8NO5P
Molecular Weight
169.07  g/mol
InChI Key
XDDAORKBJWWYJS-UHFFFAOYSA-N
FDA UNII
4632WW1X5A

Glyphosate is a synthetic organophosphate compound that blocks the activity of enolpyruvylshikimate-3-phosphate (EPSP) synthase and is used as a broad-spectrum pesticide. It is characterized as a volatile, moderately toxic, colorless, odorless crystalline solid or powder, and exposure occurs by inhalation, ingestion, or contact.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
2-(phosphonomethylamino)acetic acid
2.1.2 InChI
InChI=1S/C3H8NO5P/c5-3(6)1-4-2-10(7,8)9/h4H,1-2H2,(H,5,6)(H2,7,8,9)
2.1.3 InChI Key
XDDAORKBJWWYJS-UHFFFAOYSA-N
2.1.4 Canonical SMILES
C(C(=O)O)NCP(=O)(O)O
2.2 Other Identifiers
2.2.1 UNII
4632WW1X5A
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Gliphosate

2. Glyphosate Hydrochloride (2:1)

3. Glyphosate, Calcium Salt

4. Glyphosate, Calcium Salt (1:1)

5. Glyphosate, Copper (2+) Salt

6. Glyphosate, Dilithium Salt

7. Glyphosate, Disodium Salt

8. Glyphosate, Magnesium Salt

9. Glyphosate, Magnesium Salt (2:1)

10. Glyphosate, Monoammonium Salt

11. Glyphosate, Monopotassium Salt

12. Glyphosate, Monosodium Salt

13. Glyphosate, Sodium Salt

14. Glyphosate, Zinc Salt

15. Kalach 360 Sl

16. N-(phosphonomethyl)glycine

17. Roundup

18. Yerbimat

2.3.2 Depositor-Supplied Synonyms

1. 1071-83-6

2. N-(phosphonomethyl)glycine

3. Roundup

4. N-phosphonomethyl-glycine

5. Glyphosphate

6. 2-(phosphonomethylamino)acetic Acid

7. Glycine, N-(phosphonomethyl)-

8. N-phosphonomethylglycine

9. Glyfos

10. Pondmaster

11. N-phosphomethylglycine

12. Mon 2139

13. N-(phosphonomethyl) Glycine

14. Nsc151063

15. 2-((phosphonomethyl)amino)acetic Acid

16. Glialka

17. Glyphomax

18. Accord

19. Cp 67573

20. Mon 6000

21. Phosphonomethyliminoacetic Acid

22. 994-61-6

23. Nsc-151063

24. Chembl95764

25. Chebi:27744

26. Glyphosate 40% Aqueous Solution

27. 4632ww1x5a

28. [(phosphonomethyl)amino]acetic Acid

29. 2-[(phosphonomethyl)amino]acetic Acid

30. Silglif

31. Mon 0573

32. Roundup Max

33. Caswell No. 661a

34. 2-[(phosphonomethyl)amino]acetic Acid, 40% Aqueous Solution

35. Buccaneer

36. Folusen

37. Glifoglex

38. Herbatop

39. Hm 2028; Herbatop; Hockey; Kickdown; Klinik;nsc 151063

40. Kickdown

41. Phorsat

42. Atila

43. Forsat

44. Hockey

45. Klinik

46. Leone

47. Safal

48. ((phosphonomethyl)amino)acetic Acid

49. Gliz

50. Glygran

51. Buccaneer Plus

52. Glyphosate 100 Microg/ml In Water

53. Rebel Garden

54. Glyphodin A

55. Glyphosate Ct

56. Mfcd00055350

57. Ground Bio

58. Mon 39

59. Glyphosate [iso]

60. Lancer (herbicide)

61. Glialka 36

62. Glifosan 747

63. Glyphosate [ansi:bsi:iso]

64. Phosphonomethylglycine

65. C-k Yuyos Fav

66. Ccris 1587

67. Phosphonomethyl Glycine

68. Hsdb 3432

69. (carboxymethylamino)methylphosphonic Acid

70. Gliz 480cs

71. Cp 70139

72. Einecs 213-997-4

73. Epa Pesticide Chemical Code 417300

74. Nsc 151063

75. Brn 2045054

76. Unii-4632ww1x5a

77. N-phosphonomethyl Glycine

78. 2gga

79. 2ggd

80. N-(phosphonomethyl)-glycine

81. Gpf

82. Gpj

83. Mon 3539

84. Roundup (tn)

85. Carboxymethylaminomethanephosphinic Acid

86. Glyphosate [m+h+]

87. Hm 2028

88. Spectrum_001867

89. Glyphosate [mi]

90. Specplus_000478

91. Glyphosate-2-[13c]

92. Glyphosate-3-[13c]

93. Spectrum2_001847

94. Spectrum3_000839

95. Spectrum4_000679

96. Spectrum5_001992

97. Glyphosate [hsdb]

98. Glyphosate [iarc]

99. Wln: Qv1m1pqqo

100. Glyphosate [mart.]

101. Ncistruc1_000002

102. Ncistruc2_000104

103. Schembl16440

104. Bspbio_002397

105. Kbiogr_001117

106. Kbioss_002384

107. Spectrum330047

108. Divk1c_006574

109. Spbio_001634

110. Glyphosate, Isopropylamine Salt

111. Glyphosate-[2-13c,15n]

112. Dtxsid1024122

113. Kbio1_001518

114. Kbio2_002380

115. Kbio2_004948

116. Kbio2_007516

117. Kbio3_001897

118. Xddaorkbjwwyjs-uhfffaoysa-

119. N-(phosphonomethyl)glycine, 96%

120. Glyphosate 10 Microg/ml In Water

121. 2-(phosphonatomethylammonio)acetate

122. Amy22521

123. Bcp32091

124. Hy-b0863

125. Zinc3872713

126. 2-(phosphonomethylamino)ethanoic Acid

127. Bdbm50281349

128. Ccg-38069

129. Ncgc00014409

130. Nci151063

131. Akos004915878

132. Ks-5110

133. Ncgc00014409-02

134. Ncgc00014409-03

135. Ncgc00014409-04

136. Ncgc00094536-01

137. Ncgc00094536-02

138. Ncgc00094536-03

139. Nci60_001060

140. Cs-0012877

141. Ft-0651304

142. Glyphosate (40% In Aqueous Solution)

143. Glyphosate, Pestanal(r), Analytical Standard

144. 71g836

145. C01705

146. H10288

147. A801602

148. Q407232

149. Q-201175

150. 86491fad-2f76-4cde-90ee-6131d3fcf0bb

151. Glyphosate Isopropyl Amine Salt Aqueous Solution(41%)

152. Glyphosate, Certified Reference Material, Tracecert(r)

153. Glyphosate (n-(phosphonomethyl)glycine) 100 Microg/ml In Water

154. N-(phosphonomethyl)glycine, Plant Cell Culture Tested, Bioreagent

2.4 Create Date
2004-09-16
3 Chemical and Physical Properties
Molecular Weight 169.07 g/mol
Molecular Formula C3H8NO5P
XLogP3-4.6
Hydrogen Bond Donor Count4
Hydrogen Bond Acceptor Count6
Rotatable Bond Count4
Exact Mass169.01400935 g/mol
Monoisotopic Mass169.01400935 g/mol
Topological Polar Surface Area107 Ų
Heavy Atom Count10
Formal Charge0
Complexity162
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.)


Uncoupling Agents

Chemical agents that uncouple oxidation from phosphorylation in the metabolic cycle so that ATP synthesis does not occur. Included here are those IONOPHORES that disrupt electron transfer by short-circuiting the proton gradient across mitochondrial membranes. (See all compounds classified as Uncoupling Agents.)


Enzyme Inhibitors

Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction. (See all compounds classified as Enzyme Inhibitors.)


Antifungal Agents

Substances that destroy fungi by suppressing their ability to grow or reproduce. They differ from FUNGICIDES, INDUSTRIAL because they defend against fungi present in human or animal tissues. (See all compounds classified as Antifungal Agents.)


4.2 Absorption, Distribution and Excretion

The toxicokinetics of glyphosate after single 100 mg/kg intravenous (i.v.) and 400 mg/kg oral doses were studied in rats. Serial blood samples were obtained after i.v. and oral administration. Plasma concentrations of glyphosate and its metabolite aminomethyl phosphonic acid (AMPA) were determined by HPLC method. After i.v. and oral administration, plasma concentration-time curves were best described by a two-compartment open model. For glyphosate, the elimination half-lives (T(1/2beta)) from plasma were 9.99 hr after i.v. and 14.38 hr after oral administration. The total plasma clearance was not influenced by dose concentration or route and reached a value of 0.995 L/hr/kg. After i.v. administration, the apparent volume of distribution in the second compartment (V(2)) and volume of distribution at steady state (V(ss)) were 2.39 and 2.99 L/kg, respectively, suggesting a considerable diffusion of the herbicide into tissues. After oral administration, glyphosate was partially and slowly absorbed with a T(max) of 5.16 hr. The oral bioavailability of glyphosate was found to be 23.21%. Glyphosate was converted to AMPA. The metabolite AMPA represented 6.49% of the parent drug plasma concentrations. The maximum plasma concentrations of glyphosate and AMPA were 4.62 and 0.416 microg/mL, respectively. The maximum plasma concentration of AMPA was achieved at 2.42 hr. For AMPA, the elimination half-life (T(1/2beta)) was 15.08 hr after oral administration of glyphosate parent compound.

PMID:19607892 Anadon A et al; Toxicol Lett 190 (1): 91-5 (2009)


The disposition of glyphosate was studied in rats. Male F344/N rats were gavaged with 5.6 or 56 mg/kg radiolabeled glyphosate. Urine and feces were collected at 24 hour intervals for 72 hr and analyzed for activity. Selected rats were killed 3 to 96 hr post dosing to determine the tissue distribution of radioactivity. Approximately 20 to 30% of either dose was eliminated in the urine and 70 to 80% in the feces over 72 hr. Only about 1% of the dose remained in the tissues, mostly in the liver and small intestine.

DHHS/NTP; Toxicology and Carcinogenesis Studies of Glyphosate p.55 (1992). Technical Rpt Series No.16. NIH Pub #92-3135. Available from, as of November 10, 2014: https://ntp-server.niehs.nih.gov/


... There is rapid elimination, no biotransformation, and minimal tissue retention of glyphosate in various species, including mammals, birds, and fish.

Krieger, R. (ed.). Handbook of Pesticide Toxicology. Volume 2, 2nd ed. 2001. Academic Press, San Diego, California., p. 1668


Greater than 90% of an orally administered dose of glyphosate is rapidly eliminated in 72 hr /by laboratory animals/. ... Typically, approximately 70% of the administered dose is eliminated in the feces, with the remainder eliminated in the urine. In all cases, less than 0.5% of the administered dose is found in the tissue and organs, demonstrating that glyphosate does not bioaccumulate in edible tissues.

Krieger, R. (ed.). Handbook of Pesticide Toxicology. Volume 2, 2nd ed. 2001. Academic Press, San Diego, California., p. 1668


For more Absorption, Distribution and Excretion (Complete) data for GLYPHOSATE (11 total), please visit the HSDB record page.


4.3 Metabolism/Metabolites

...In rats, > 97% of the (14)C/glyphosate/ in excreta, after a single oral dose, was shown to be unchanged compound. AMPA was the only metabolite, covering only 0.2-0.3% of the applied (14)C...

WHO/International Programme on Chemical Safety; Environmental Health Criteria 159, Glyphosate, (1994). Available from, as of November 10, 2014: https://www.inchem.org/pages/ehc.html


Following a single oral dose of 14C-glyphosate, amino methyl phosphonic acid (AMPA) was the only metabolite found in urine (0.2-0.3% of the administered dose) and feces (0.2-0.4% of the administered dose) /of male and female Sprague-Dawley rats/.

USEPA; Reregistration Eligibility Decision (RED) Database for Glyphosate (38641-94-0). EPA 738-R-93-014 (September 1993). Available from, as of January 25, 2006: https://www.epa.gov/pesticides/reregistration/status.htm


Studies of the metabolism of glyphosate in experimental animals (rats, rabbits, lactating goats, and chickens) indicate that it is not biotransformed, with essentially all the administered dose excreted as unchanged parent molecule.

Krieger, R. (ed.). Handbook of Pesticide Toxicology. Volume 2, 2nd ed. 2001. Academic Press, San Diego, California., p. 1669


Biotransformation of glyphosate occurs to a very low degree only. In rats it was shown that all of the carbon-14 in urine and feces, after a single oral application of (14)C-glyphosate, was present as unchanged parent compound. Also in rats, > 97% of the carbon-14 in excreta, after a single oral dose, was shown to be unchanged compound. AMPA was the only metabolite, covering only 0.2-0.3% of the applied carbon-14. In laying hens also, AMPA was the only metabolite, accounting for only a minor part of the applied amount.

WHO/International Programme on Chemical Safety; Environmental Health Criteria 159, Glyphosate, (1994). Available from, as of November 10, 2014: https://www.inchem.org/pages/ehc.html


4.4 Biological Half-Life

Male and female Sprague-Dawley rats received single intraperitoneal injections of radiolabeled (14)C glyphosate. The dose level of glyphosate used for male and female rats was 1150 mg/kg. Blood samples were collected 0.25, 0.50, 1, 2, 4, 6 and 10 hours after injection. ... Assuming first order kinetics, the decrease in radioactivity in bone marrow occurred with a half-life of 7.6 and 4.2 hours for males and females, respectively. Similarly, the half-lives of the radioactivity in plasma were approximately 1 hour for both sexes.

USEPA; Reregistration Eligibility Decision (RED) Database for Glyphosate (38641-94-0). EPA 738-R-93-014 (September 1993). Available from, as of January 25, 2006: https://www.epa.gov/pesticides/reregistration/status.htm


The kinetics of whole body elimination were estimated using the radioactivity (14)C measured in urine and feces after a single oral dose of (14)C-glyphosate (10 or 1000 mg/kg body weight). Because of the lack of biotransformation of glyphosate it is valid to base kinetics on total radioactivity. The elimination appeared to be biphasic. The half-life of the alpha elimination phase at 10 mg/kg body weight was 5.87 hr (males) or 6.22 hr (females); at 1000 mg/kg body weight this was 5.26 hr (males)or 6.44 hr (females). The half-life of the beta phase at 10 mg/kg body weight was 79 hr (males) or 106 hr (females); at 1000 mg/kg body weight this was 181 hr (males) or 337 hr (females).

WHO/International Programme on Chemical Safety; Environmental Health Criteria 159, Glyphosate, (1994). Available from, as of November 10, 2014: https://www.inchem.org/pages/ehc.html


The toxicokinetics of glyphosate after single 100 mg/kg intravenous (i.v.) and 400 mg/kg oral doses were studied in rats. ... For glyphosate, the elimination half-lives (T(1/2beta)) from plasma were 9.99 hr after i.v. and 14.38 hr after oral administration.

PMID:19607892 Anadon A et al; Toxicol Lett 190 (1): 91-5 (2009)


4.5 Mechanism of Action

Previous studies demonstrate that glyphosate exposure is associated with oxidative damage and neurotoxicity. Therefore, the mechanism of glyphosate-induced neurotoxic effects needs to be determined. The aim of this study was to investigate whether Roundup (a glyphosate-based herbicide) leads to neurotoxicity in hippocampus of immature rats following acute (30min) and chronic (pregnancy and lactation) pesticide exposure. Maternal exposure to pesticide was undertaken by treating dams orally with 1% Roundup (0.38% glyphosate) during pregnancy and lactation (till 15-day-old). Hippocampal slices from 15 day old rats were acutely exposed to Roundup (0.00005-0.1%) during 30min and experiments were carried out to determine whether glyphosate affects (45)Ca(2+) influx and cell viability. Moreover, /this study/ investigated the pesticide effects on oxidative stress parameters, (14)C-alpha-methyl-amino-isobutyric acid ((14)C-MeAIB) accumulation, as well as glutamate uptake, release and metabolism. Results showed that acute exposure to Roundup (30min) increases (45)Ca(2+) influx by activating NMDA receptors and voltage-dependent Ca(2+) channels, leading to oxidative stress and neural cell death. The mechanisms underlying Roundup-induced neurotoxicity also involve the activation of CaMKII and ERK. Moreover, acute exposure to Roundup increased (3)H-glutamate released into the synaptic cleft, decreased GSH content and increased the lipoperoxidation, characterizing excitotoxicity and oxidative damage. /This study/ also observed that both acute and chronic exposure to Roundup decreased (3)H-glutamate uptake and metabolism, while induced (45)Ca(2+) uptake and (14)C-MeAIB accumulation in immature rat hippocampus. Taken together, these results demonstrated that Roundup might lead to excessive extracellular glutamate levels and consequently to glutamate excitotoxicity and oxidative stress in rat hippocampus.

PMID:24636977 Cattani D et al; Toxicology 320: 34-45 (2014)


Glyphosate is the primary active constituent of the commercial pesticide Roundup. The present results show that acute Roundup exposure at low doses (36 ppm, 0.036 g/L) for 30 min induces oxidative stress and activates multiple stress-response pathways leading to Sertoli cell death in prepubertal rat testis. The pesticide increased intracellular Ca(2+) concentration by opening L-type voltage-dependent Ca(2+) channels as well as endoplasmic reticulum IP3 and ryanodine receptors, leading to Ca(2+) overload within the cells, which set off oxidative stress and necrotic cell death. Similarly, 30 min incubation of testis with glyphosate alone (36 ppm) also increased (45)Ca(2+) uptake. These events were prevented by the antioxidants Trolox and ascorbic acid. Activated protein kinase C, phosphatidylinositol 3-kinase, and the mitogen-activated protein kinases such as ERK1/2 and p38MAPK play a role in eliciting Ca(2+) influx and cell death. Roundup decreased the levels of reduced glutathione (GSH) and increased the amounts of thiobarbituric acid-reactive species (TBARS) and protein carbonyls. Also, exposure to glyphosate-Roundup stimulated the activity of glutathione peroxidase, glutathione reductase, glutathione S-transferase, gamma-glutamyltransferase, catalase, superoxide dismutase, and glucose-6-phosphate dehydrogenase, supporting downregulated GSH levels. Glyphosate has been described as an endocrine disruptor affecting the male reproductive system; however, the molecular basis of its toxicity remains to be clarified. We propose that Roundup toxicity, implicated in Ca(2+) overload, cell signaling misregulation, stress response of the endoplasmic reticulum, and/or depleted antioxidant defenses, could contribute to Sertoli cell disruption in spermatogenesis that could have an impact on male fertility.

PMID:23820267 de Liz Oliveira Cavalli VL et al; Free Radic Biol Med 65: 335-46 (2013)


A deregulation of programmed cell death mechanisms in human epidermis leads to skin pathologies. We previously showed that glyphosate, an extensively used herbicide, provoked cytotoxic effects on cultured human keratinocytes, affecting their antioxidant capacities and impairing morphological and functional cell characteristics. The aim of the present study, carried out on the human epidermal cell line HaCaT, was to examine the part of apoptosis plays in the cytotoxic effects of glyphosate and the intracellular mechanisms involved in the apoptotic events. /This study/ conducted different incubation periods to reveal the specific events in glyphosate-induced cell death. /It/ observed an increase in the number of early apoptotic cells at a low cytotoxicity level (15%), and then, a decrease, in favor of late apoptotic and necrotic cell rates for more severe cytotoxicity conditions. At the same time, /the study/ showed that the glyphosate-induced mitochondrial membrane potential disruption could be a cause of apoptosis in keratinocyte cultures.

PMID:22522424 Heu C et al; Environ Toxicol Pharmacol 34 (2): 144-53 (2012)


Herbicides have been recognized as the main environmental factor associated with human neurodegenerative disorders such as Parkinson's disease(PD). Previous studies indicated that the exposure to glyphosate, a widely used herbicide, is possibly linked to Parkinsonism, however the underlying mechanism remains unclear. We investigated the neurotoxic effects of glyphosate in differentiated PC12 /rat/ cells and discovered that it inhibited viability of differentiated PC12 cells in dose-and time-dependent manners. Furthermore, the results showed that glyphosate induced cell death via autophagy pathways in addition to activating apoptotic pathways. Interestingly, deactivation of Beclin-1 gene attenuated both apoptosis and autophagy in glyphosate treated differentiated PC12 cells, suggesting that Beclin-1 gene is involved in the crosstalk between the two mechanisms.

PMID:22504123 Gui YX et al; Neurotoxicol Teratol 34 (3): 344-9 (2012)


For more Mechanism of Action (Complete) data for GLYPHOSATE (7 total), please visit the HSDB record page.