tobacco, oakmoss, leathery, caramellic, roasted, hazelnut1
1.) The Good Scents Company
2.) Françoise, W., Philippeau, M., Veithen, A., Chatelain, P., & Quesnel, Y. (2016, May). Functional characterization of human olfactory receptors responding to pyrazine odorants. In CHEMICAL SENSES (Vol. 41, No. 4, pp. 433-434). GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND: OXFORD UNIV PRESS.
3.) Marcinek, Patrick, et al. "An evolutionary conserved olfactory receptor for foodborne and semiochemical alkylpyrazines." The FASEB Journal 35.6 (2021): e21638.
References for aroma perceptual qualities should not be taken to indicate that the authors of outside studies necessarily assigned aroma notes to the neurons that receive input from any given receptor. Rather, the findings of outside studies often constitute the information on which we base our own perceptual quality assignments.