Novel compounds of formula I and their use in flavour and fragrance compositions. ##STR00001## R.sup.1 to R.sup.13 have the meaning as described in the specification.

 
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< Conditioning composition for hair comprising a mixture of polyarylated silicone, quaternary silicone, and cationic surfactant

> Propanol and related compounds and their use in perfume compositions

> Fabric conditioning compositions

~ 00595