Table 1.

Comparison of concentrations of odorants in native and glucuronidase-treated human urine.

No. 1,2	Compound 3	Median concentration native urine [µg/mol creatinine]	Median concentration glucuronidase-treated urine [µg/mol creatinine]	Factor 4	Percentage 5 [%]
2	4-ethylguaiacol	44	952	22	5 // 95
3	4-vinylguaiacol	290	7890	27	4 // 96
4	(E)-β-damascenone	1.6	52	33	3 // 97
5	dimethyl trisulfide	52	855	16	6 // 94
6	guaiacol	34	22000	647	0 // 100
7	indole	52	33200	638	0 // 100
8	methional	82	904	11	9 // 91
9	skatole	28	97	3	29 // 71
10	vanillin	510	6300	12	8 // 92

¹ Numbering is in accordance to online supplementary material Table S1; ² As no quantitation of oct-1-en-3-one was possible in hydrolyzed urine (and the numbering is in accordance to online supplementary material Table S1), number 1 (oct-1-en-3-one) is left out in this table.; ³ Compounds listed in alphabetical order; ⁴ Factor: median concentration in glucuronidase-treated urine divided by median concentration in native urine; ⁵ Displayed is the average percentage of each compound present in its free form as opposed to its glucuronide conjugate, separated by a double slash.