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Table 1 Relative concentration (counts adjusted relative to standard) of two urinary volatiles in intact B6 urine and in high molecular weight (HMW ≥ 3 kDa) and low molecular weight (LMW < 3 kDa) fractions.

From: Darcin: a male pheromone that stimulates female memory and sexual attraction to an individual male's odour

  2-sec-butyl 4,5 dihydrothiazole 3-4 dehydro-exo-brevicomin
  Male Female Male Female
Intact urine 33 0 1.5 0.4
HMW 48 0 1.8 0.7
LMW 0.9 0 0.3 0.1
Water control 0 0 0 0