Jasmonic acid, methyl jasmonate, and salicylic acid have been reported to occur in plants and are thought to be essential for the regulation of systemic defence responses. Inclusion during sample preparation of hydrogenated and/or deuterated internal standards corresponding to analogues of the regulators compensate for sample loss and permit quantification using the multiple reaction monitoring mode of the mass spectrometer.

[²H₆](±)-JASMONIC ACID (D-JA) [3-oxo-2-([3-²H,4-²H₂,5-²H₃](Z)-2-pentenyl)cyclopentane-1-acetic acid]

MW 216.23; liquid; purity > 95% (HPLC)
Diluted in acetonitrile : water (1 : 1,v/v)
S:26, 36; CAS: 221682-79-7; C12H122H6O3
	036 2821	50	ng
	036 2822	100	ng
	036 2823	250	ng

[²H₂](±)-JASMONIC ACID (D-JA) [3-oxo-2-((Z)-2-pentenyl)cyclopentane-1-[²H₂]acetic acid]

MW 212.26; liquid; purity > 95% (HPLC)
Diluted in ethanol
S:26, 36; CAS: 903510-50-9; C12H162H2O3
	036 7051	50	ng
	036 7052	100	ng
	036 7053	250	ng

[²H₅]cis-12-OXO-PHYTODIENOIC ACID (D-OPDA)[mixture of (1S,2S)-3-oxo-2-([4-²H₂, 5-²H₃](Z)-2pentenyl)cyclopent-4-ene-1-octanoic acid + (1R,2R)-3-oxo-2-([4-²H₂, 5-²H₃](Z)-2-pentenyl)cyclopent-4-ene-1-octanoic acid]

MW 297.38; liquid; purity > 95% (HPLC)
Diluted in acetonitrile : water (1 : 1,v/v)
S:26, 36; C18H232H5O3
	036 6191	500	ng
	036 6192	1	µg
	036 6193	2	µg

[²H₃]N-[(-)-JASMONYL]-LEUCINE (D-(-)-JALeu) [N-[(1R,2R)-3-oxo-2-((Z)-2pentenyl)cyclopentane-1-acetyl]-(2S,3S)[5-²H₃]leucine]

MW 326.41; liquid; purity > 95% (HPLC)
Diluted in acetonitrile : water (1 : 1,v/v)
S:26, 36; C18H262H3NO4
	036 6271	500	ng
	036 6272	1	µg
	036 6273	2	µg

[²H₂]N-[(-)-JASMONYL]-ISOLEUCINE (D-(-)-JAILE) [N-[(1R,2R)-3-oxo-2-(2-(Z)-pentenyl)cyclopentane-1-([²H₂]acetyl)]-(2S,3S)-isoleucine]

MW 325.42; liquid; purity > 95% (HPLC)
Diluted in ethanol
S:26, 36; C18H272H2NO4
	036 6861	500	ng
	036 6862	1	µg
	036 6863	2	µg

[²H₂](±)-TUBERONIC ACID (D-TA, D-12OHJA) [3-oxo-2-(4-hydroxy-(Z)-2-pentenyl)cyclopentane-1-[²H₂]acetic acid]

MW 228.26; liquid; purity > 90% (HPLC), contains 10% iso-(±)-12OH-JA
Diluted in acetonitrile : water (1 : 1,v/v)
S:26, 36; CAS: 903510-54-3; C12H152H3O4
	036 2871	500	ng
	036 2872	1	µg
	036 2873	2	µg

[²H₅](±)-OPC-8 [3-oxo-2-([4-²H₂, 5-²H₃](Z)-2-pentenyl)cyclopentane-1-octanoic acid]

MW 294.40; liquid; purity > 95% (HPLC)
Diluted in acetonitrile : water (1 : 1,v/v)
S:26, 36; C18H272H5O3
	036 6201	500	ng
	036 6202	1	µg
	036 6203	2	µg