Similarity is based on note and accord overlap, not molecular analysis.
Signature pair: Saffron and Agarwood (Oud)
Differences come from accords and community votes on longevity and sillage.
The main accords of Oud Ispahan are oud and rose. It opens with Labdanum, reveals Rose and Patchouli at its heart, and dries down to Agarwood (Oud) and Sandalwood. People reach for it in autumn and winter, mostly in the evening.
How a perfume unfolds →