. Author manuscript; available in PMC: 2020 Jun 15.

Published in final edited form as: Dermatitis. 2020 Mar-Apr;31(2):134–139. doi: 10.1097/DER.0000000000000544

TABLE 3.

Liquid Chromatography-Tandem Mass Spectrometer Urushiol Analyses

Product Name	Pentadecylcatechols Detected and Proportion, %	Heptadecylcatechols Detected and Proportion, %	Amount of Urushiols
Hyland’s Leg Cramps Ointment	None detected	None detected	None detected
LUSH Ocean Salt Face and Body Scrub	None detected	None detected	None detected
LUSH None of Your Beeswax Lip Balm	C₂₁H₃₆O₂ (10%), C₂₁H₃₄O₂ (20%), C₂₁H₃₂O₂ trace, C₂₁H₃₀O₂ trace	C₂₃H₄₀O₂ (69%)	58 ng/g
Bakson’s Rhus Tox Ointment	C₂₁H₃₆O₂ trace, C₂₁H₃₄O₂ (15%), C₂₁H₃₂O₂ trace	C₂₃H₄₀O₂ (3%), C₂₃H₃₈O₂ (24%), C₂₃H₃₆O₂ (21%), C₂₃H₃₄O₂ (37%), C₂₃H₃₂O₂ trace	190 ng/g
Nelsons Rhus Tox Cream	None detected	None detected	None detected
Helios Rhus Tox and Ruta Cream	C₂₁H₃₆O₂ (16%), C₂₁H₃₄O₂ (36%), C₂₁H₃₂O₂ (39%), C₂₁H₃₀O₂ (2%)	C₂₃H₄₀O₂ trace, C₂₃H₃₈O₂ (1%), C₂₃H₃₆O₂ (6%), C₂₃H₃₄O₂ trace, C₂₃H₃₂O₂ trace	1.1 μg/g
Washington Rhus Tox 6X	None detected	None detected	None detected
Washington Rhus Tox 30X	None detected	None detected	None detected
Rhus Tox Skin Test Reagent	C₂₁H₃₆O₂ (62%), C₂₁H₃₄O₂ (21%), C₂₁H₃₂O₂ (8%), C₂₁H₃₀0₂ (3%)	C₂₃H₄₀O₂ trace, C₂₃H₃₈O₂ (4%), C₂₃H₃₆O₂(1%)	1.1 μg/g