Cassis base is a common name in perfumery for a family of compounded specialty accords built to reproduce the smell of blackcurrant (cassis) bud and leaf without relying on the natural absolute, which is expensive, batch-variable, and restricted in use rate due to irritation concerns. Rather than a single defined molecule, these are proprietary blends assembled by aroma-chemical houses, typically combining a small dose of a potent sulfur-bearing thiol (the type of material found naturally in blackcurrant bud, sometimes referenced under names like cassyrane or generic "blackcurrant mercaptan") with fruity esters, green and woody-boxwood facets, and sometimes rose or floral modifiers to round out the profile and buffer the sulfur note. The resulting odor character is green and tart-fruity, unmistakably blackcurrant, carrying a pungent, faintly animalic or "catty" edge alongside the juicy sweetness — that sulfurous sharpness is part of what makes cassis recognizable and distinctive rather than a flaw, though it can tip into unpleasant if overdosed. In formulation these bases are used at low levels as a top-to-heart accent in fruity, green, chypre-fruity, and certain floral compositions, prized for the lift and realism they lend to blackcurrant or mixed-berry accords. A 10% dilution, as this entry appears to be, is a standard working strength for handling such a potent specialty. The exact composition, ratio, and supplier behind this particular "Cassis Base 10%" cannot be confirmed from public sources and should be verified against the actual product datasheet or SDS on file. — researched, 2026-09-02.
A tart, juicy blackcurrant note with a distinctive green, slightly catty-sulfurous edge typical of cassis bases. Opens sharp and fruity with a wine-like tang, settling into a softer berry-jam facet.AI · claude-opus-4-7
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