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. 2024 Feb 26;22(2):e8560. doi: 10.2903/j.efsa.2024.8560
Code/trivial name a IUPAC name/SMILES notation/InChiKey b Structural formula c
Quizalofop‐P‐ethyl

ethyl (2R)‐2‐[4‐(6‐chloroquinoxalin‐2‐yloxy)phenoxy]propionate

O=C(OCC)[C@@H](C)Oc1ccc(cc1)Oc2cnc3cc(Cl)ccc3n2

OSUHJPCHFDQAIT‐GFCCVEGCSA‐N

 graphic file with name EFS2-22-e8560-g014.jpg
Quizalofop‐P‐tefuryl

(RS)‐tetrahydrofurfuryl (R)‐2‐[4‐(6‐chloroquinoxalin‐2‐yloxy)phenoxy]propionate

O=C(OCC1CCCO1)[C@@H](C)Oc4ccc(Oc2cnc3cc(Cl)ccc3n2)cc4

BBKDWPHJZANJGB‐IKJXHCRLSA‐N

 graphic file with name EFS2-22-e8560-g004.jpg
Propaquizafop

2‐isopropylideneaminooxyethyl (R)‐2‐[4‐(6‐chloroquinoxalin‐2‐yloxy)phenoxy]propionate

C/C(C) = N\OCCOC(=O)[C@@H](C)Oc1ccc(cc1)Oc2cnc3cc(Cl)ccc3n2

FROBCXTULYFHEJ‐OAHLLOKOSA‐N

 graphic file with name EFS2-22-e8560-g006.jpg
Quizalofop‐P

(R)‐2‐[4‐(6‐chloroquinoxalin‐2‐yloxy)phenoxy]propionic acid

O=C(O)[C@@H](C)Oc1ccc(cc1)Oc2cnc3cc(Cl)ccc3n2

ABOOPXYCKNFDNJ‐SNVBAGLBSA‐N

 graphic file with name EFS2-22-e8560-g005.jpg
Quizalofop

(RS)‐2‐[4‐(6‐chloroquinoxalin‐2‐yloxy)phenoxy]propionic acid

O=C(O)C(C)Oc1ccc(cc1)Oc2cnc3cc(Cl)ccc3n2

ABOOPXYCKNFDNJ‐UHFFFAOYSA‐N

 graphic file with name EFS2-22-e8560-g018.jpg
Phenoxy propionate (EPP)

2‐(4‐hydroxyphenoxy)‐2‐methylbutanoate

[O‐]C(=O)C(C)(CC)Oc1ccc(O)cc1

CFECBIHTYUULLL‐UHFFFAOYSA‐M

 graphic file with name EFS2-22-e8560-g013.jpg

Phenoxy acid

Hydroxyphenoxypropionic acid (PPA)

(R)‐2‐(4‐hydroxyphenoxy)propionic acid

C[C@@H](Oc1ccc(O)cc1)C(=O)O

AQIHDXGKQHFBNW‐ZCFIWIBFSA‐N

 graphic file with name EFS2-22-e8560-g012.jpg

Quizalofop‐phenol

Hydroxy ether (CQOP)

4‐(6‐chloroquinoxalin‐2‐yloxy)phenol

Oc1ccc(cc1)Oc2cnc3cc(Cl)ccc3n2

UVYFSLAJRJHGJB‐UHFFFAOYSA‐N

 graphic file with name EFS2-22-e8560-g001.jpg

Hydroxy‐quizalofop‐phenol (CQOPOH)

Dihydroxy ether

7‐chloro‐3‐(4‐hydroxyphenoxy)quinoxalin‐2(1H)‐one

Oc1ccc(cc1)Oc2nc3ccc(Cl)cc3nc2O

SUDISTHTCZHOSE‐UHFFFAOYSA‐N

 graphic file with name EFS2-22-e8560-g002.jpg
MCQ

6‐chloro‐2‐methoxyquinoxaline

Clc1ccc2nc(cnc2c1)OC

DSZWPJSGTPEFJI‐UHFFFAOYSA‐N

 graphic file with name EFS2-22-e8560-g010.jpg
Quizalofop pentanoic acid

(4RS)‐4‐{4‐[(6‐chloroquinoxalin‐2‐yl)oxy]phenoxy}pentanoic acid

O=C(O)CCC(C)Oc1ccc(cc1)Oc1cnc2cc(Cl)ccc2n1

QBGCZWKTOZILKU‐UHFFFAOYSA‐N

 graphic file with name EFS2-22-e8560-g007.jpg

Abbreviations: InChiKey, International Chemical Identifier Key; IUPAC, International Union of Pure and Applied Chemistry; SMILES, simplified molecular‐input line‐entry system.

a

The metabolite name in bold is the name used in the conclusion.

b

ACD/Name 2020.2.1 ACD/Labs 2020 Release (File version N15E41, Build 116563, 15 June 2020).

c

ACD/ChemSketch 2020.2.1 ACD/Labs 2020 Release (File version C25H41, Build 121153, 22 March 2021).