Basic Info

Common NameEthephon(F05063)
2D Structure
Description

Ethephon is the word’s most widely used plant growth regulator. It is manufactured by Rhône-Poulenc (Bayer Crop Science). Upon metabolism by the plant, it is converted into ethylene, a potent regulator of plant growth and maturity. It is often used on wheat, coffee, tobacco, cotton, and rice in order to help the plant's fruit reach maturity more quickly. Cotton is the most important single crop use for ethephon. It initiates fruiting over a period of several weeks, and enhances defoliation to facilitate and improve efficiency of scheduled harvesting. Ethephon also is widely used by pineapple growers to initiate reproductive development of pineapple. Ethephon is also sprayed on mature-green pineapple fruits to degreen them to meet produce marketing requirements. The toxicity of ethephon is actually very low, and any ethephon used on the plant is converted very quickly to ethylene.

FRCD IDF05063
CAS Number16672-87-0
PubChem CID27982
FormulaC2H6ClO3P
IUPAC Name

2-chloroethylphosphonic acid

InChI Key

UDPGUMQDCGORJQ-UHFFFAOYSA-N

InChI

InChI=1S/C2H6ClO3P/c3-1-2-7(4,5)6/h1-2H2,(H2,4,5,6)

Canonical SMILES

C(CCl)P(=O)(O)O

Isomeric SMILES

C(CCl)P(=O)(O)O

Synonyms
        
            2-Chloroethylphosphonic acid
        
            Phosphonic acid, (2-chloroethyl)-
        
            ETHEPHON
        
            16672-87-0
        
            (2-Chloroethyl)phosphonic acid
        
            Ethrel
        
            Chlorethephon
        
            Bromeflor
        
            Camposan
        
            2-Cepa
        
Classifies
                

                  
                    Pesticide
                  

                
        
Update DateNov 13, 2018 17:07

Chemical Taxonomy

KingdomOrganic compounds
SuperclassOrganic acids and derivatives
ClassOrganic phosphonic acids and derivatives
SubclassOrganic phosphonic acids
Intermediate Tree NodesNot available
Direct ParentOrganic phosphonic acids
Alternative Parents
Molecular FrameworkAliphatic acyclic compounds
SubstituentsOrganophosphonic acid - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organophosphorus compound - Organochloride - Organohalogen compound - Alkyl halide - Alkyl chloride - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as organic phosphonic acids. These are organic compounds containing phosphonic acid.

Properties

Property NameProperty Value
Molecular Weight144.491
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count3
Rotatable Bond Count2
Complexity86.9
Monoisotopic Mass143.974
Exact Mass143.974
XLogP-1
Formal Charge0
Heavy Atom Count7
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Isotope Atom Count0
Covalently-Bonded Unit Count1

ADMET

Model Result Probability
Absorption
Blood-Brain BarrierBBB+0.8758
Human Intestinal AbsorptionHIA+0.6638
Caco-2 PermeabilityCaco2-0.6459
P-glycoprotein SubstrateNon-substrate0.7950
P-glycoprotein InhibitorNon-inhibitor0.9370
Non-inhibitor0.9856
Renal Organic Cation TransporterNon-inhibitor0.9182
Distribution
Subcellular localizationMitochondria0.8272
Metabolism
CYP450 2C9 SubstrateNon-substrate0.7737
CYP450 2D6 SubstrateNon-substrate0.8120
CYP450 3A4 SubstrateNon-substrate0.6586
CYP450 1A2 InhibitorNon-inhibitor0.8847
CYP450 2C9 InhibitorNon-inhibitor0.9101
CYP450 2D6 InhibitorNon-inhibitor0.9308
CYP450 2C19 InhibitorNon-inhibitor0.8703
CYP450 3A4 InhibitorNon-inhibitor0.8978
CYP Inhibitory PromiscuityLow CYP Inhibitory Promiscuity0.9572
Excretion
Toxicity
Human Ether-a-go-go-Related Gene InhibitionWeak inhibitor0.7298
Non-inhibitor0.9144
AMES ToxicityNon AMES toxic0.5350
CarcinogensCarcinogens 0.5593
Fish ToxicityLow FHMT0.8605
Tetrahymena Pyriformis ToxicityHigh TPT0.9187
Honey Bee ToxicityHigh HBT0.7761
BiodegradationNot ready biodegradable0.9027
Acute Oral ToxicityIII0.7991
Carcinogenicity (Three-class)Non-required0.4587

Model Value Unit
Absorption
Aqueous solubility-1.7708LogS
Caco-2 Permeability-0.1761LogPapp, cm/s
Distribution
Metabolism
Excretion
Toxicity
Rat Acute Toxicity1.6591LD50, mol/kg
Fish Toxicity2.0906pLC50, mg/L
Tetrahymena Pyriformis Toxicity-0.1847pIGC50, ug/L

MRLs

FoodProduct CodeCountryMRLsApplication DateNotes
YamsBritain0.05mg/kg
Wild Berries & Wild FruitBritain0.05mg/kg
Pig,MuscleJapan0.1ppm
Turnip,LeavesJapan0.05ppm
PineapplesCanada0. 5mg/kg
Wheat Milling Fractions, Excluding FlourCanada2mg/kg
Rose hips0154050European Union0.05*20/10/2017
Mulberries (black and white)0154060European Union0.05*20/10/2017
Loquats/Japanese medlars0130050European Union0.05*20/10/2017
Others (2)0130990European Union0.05*20/10/2017
Cherries (sweet) (Black cherries, Capulins, Chokecherries, Cornelian cherries/European corniols, Nanking cherries, Sour cherries/morello cherries,)0140020European Union520/10/2017
Peaches (Flat peaches/saturn peaches/paraguayas, Nectarines, Other hybrids of Persica vulgaris; syn: Prunus persica, not elsewhere mentioned,)0140030European Union0.05*20/10/2017
Others (2)0140990European Union0.05*20/10/2017
Table grapes (Kiwiberries/dwarf kiwi (2), Schisandra berries,)0151010European Union120/10/2017
Wine grapes (Amur river grapes, Muscadine grapes,)0151020European Union220/10/2017
(b) strawberries (Musky strawberries, Wild strawberries,)0152000European Union0.05*20/10/2017
(c) cane fruits0153000European Union0.05*20/10/2017
Blackberries0153010European Union0.05*20/10/2017
Dewberries (Boysenberries, Loganberries, Olallieberries, Salmonberries, Tayberries, Thimbleberries, Youngberries, Other species and hybrids of genus Rubus, not elsewhere mentioned,)0153020European Union0.05*20/10/2017
Raspberries (red and yellow) (Arctic brambles/arctic raspberries/nectar berries, Black raspberries, Korean black raspberries, Korean raspberries, Nectar raspberries, Wineberries/Japanese wineberries,)0153030European Union0.05*20/10/2017

References

TitleJournalDatePubmed ID
Factors affecting the quantitative uncertainty of the estimated short-termintake. Part I-Calculation methods.J Environ Sci Health B2018 Jun 329584571
Calcium-dependent protein kinases in cotton: insights into early plant responses to salt stress.BMC Plant Biol2018 Jan 1729343239
Effect of ethylene and 1-methylcyclopropene on the postharvest behavior of capegooseberry fruits (Physalis peruviana L.).Food Sci Technol Int2017 Jan27440155
Development and Validation of Ion Chromatography-Tandem Mass Spectrometry-BasedMethod for the Multiresidue Determination of Polar Ionic Pesticides in Food.J Agric Food Chem2017 Aug 3028388055
Determination of Glyphosate, Maleic Hydrazide, Fosetyl Aluminum, and Ethephon in Grapes by Liquid Chromatography/Tandem Mass Spectrometry.J Agric Food Chem2017 Aug 3028759225
Field evaluation of two risk indicators for predicting likelihood of pesticidetransport to surface water from two orchards.Sci Total Environ2016 Nov 1527424118
Novel insights of ethylene role in strawberry cell wall metabolism.Plant Sci2016 Nov27717444
Simple extraction method using syringe filter for detection of ethephon intomatoes by negative-ion mode liquid chromatography with tandem massspectrometry.Biomed Chromatogr2015 Oct25753465
Effects of pre-harvest chemical application on rice desiccation and seed quality.J Zhejiang Univ Sci B2015 Oct26465129
Hormonal and metabolic regulation of tomato fruit sink activity and yield undersalinity.J Exp Bot2014 Nov25170099
Pectin-derived oligosaccharides increase color and anthocyanin content in FlameSeedless grapes.J Sci Food Agric2011 Aug 1521484810
Investigation of in vitro effects of ethephon and chlorpyrifos, either alone orin combination, on rat intestinal muscle contraction.Interdiscip Toxicol2010 Mar21217869
Ethephon elicits protection against Erysiphe necator in grapevine.J Agric Food Chem2008 Jul 2318570435
Post-anthesis development of inferior and superior spikelets in rice in relation to abscisic acid and ethylene.J Exp Bot200616330527
An ion-pairing liquid chromatography/tandem mass spectrometric method for thedetermination of ethephon residues in vegetables.Rapid Commun Mass Spectrom200616381059

Targets

General Function:
Identical protein binding
Specific Function:
Esterase with broad substrate specificity. Contributes to the inactivation of the neurotransmitter acetylcholine. Can degrade neurotoxic organophosphate esters.
Gene Name:
BCHE
Uniprot ID:
P06276
Molecular Weight:
68417.575 Da
References
  1. Liyasova MS, Schopfer LM, Kodani S, Lantz SR, Casida JE, Lockridge O: Newly observed spontaneous activation of ethephon as a butyrylcholinesterase inhibitor. Chem Res Toxicol. 2013 Mar 18;26(3):422-31. doi: 10.1021/tx300501n. Epub 2013 Mar 1. [23410221 ]
General Function:
Zinc ion binding
Specific Function:
Transcriptionally controlled transcription factor. Binds to DNA sites required for the transcription of alpha 1-antitrypsin, apolipoprotein CIII, transthyretin genes and HNF1-alpha. May be essential for development of the liver, kidney and intestine.
Gene Name:
HNF4A
Uniprot ID:
P41235
Molecular Weight:
52784.205 Da
References
  1. Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
Gene Name:
CCL2
Uniprot ID:
P13500
Molecular Weight:
11024.87 Da
References
  1. Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
General Function:
Cytokine activity
Specific Function:
Cytokine that affects the growth, movement, or activation state of cells that participate in immune and inflammatory response. Chemotactic for activated T-cells. Binds to CXCR3.
Gene Name:
CXCL9
Uniprot ID:
Q07325
Molecular Weight:
14018.72 Da
References
  1. Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
General Function:
Cytokine activity
Specific Function:
Produced by activated macrophages, IL-1 stimulates thymocyte proliferation by inducing IL-2 release, B-cell maturation and proliferation, and fibroblast growth factor activity. IL-1 proteins are involved in the inflammatory response, being identified as endogenous pyrogens, and are reported to stimulate the release of prostaglandin and collagenase from synovial cells.
Gene Name:
IL1A
Uniprot ID:
P01583
Molecular Weight:
30606.29 Da
References
  1. Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
General Function:
Norepinephrine:sodium symporter activity
Specific Function:
Amine transporter. Terminates the action of noradrenaline by its high affinity sodium-dependent reuptake into presynaptic terminals.
Gene Name:
SLC6A2
Uniprot ID:
P23975
Molecular Weight:
69331.42 Da
References
  1. Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
General Function:
Ubiquitin protein ligase binding
Specific Function:
Receptor tyrosine kinase binding ligands of the EGF family and activating several signaling cascades to convert extracellular cues into appropriate cellular responses. Known ligands include EGF, TGFA/TGF-alpha, amphiregulin, epigen/EPGN, BTC/betacellulin, epiregulin/EREG and HBEGF/heparin-binding EGF. Ligand binding triggers receptor homo- and/or heterodimerization and autophosphorylation on key cytoplasmic residues. The phosphorylated receptor recruits adapter proteins like GRB2 which in turn activates complex downstream signaling cascades. Activates at least 4 major downstream signaling cascades including the RAS-RAF-MEK-ERK, PI3 kinase-AKT, PLCgamma-PKC and STATs modules. May also activate the NF-kappa-B signaling cascade. Also directly phosphorylates other proteins like RGS16, activating its GTPase activity and probably coupling the EGF receptor signaling to the G protein-coupled receptor signaling. Also phosphorylates MUC1 and increases its interaction with SRC and CTNNB1/beta-catenin.Isoform 2 may act as an antagonist of EGF action.
Gene Name:
EGFR
Uniprot ID:
P00533
Molecular Weight:
134276.185 Da
References
  1. Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]