A well-known exception is the diversity of compound eyes (like those of modern insects) documented in extinct trilobites, because the lenses of tiny calcite crystals are hard, and are often preserved as fossils (for a review see Fortey 2000).
One notable exception was the serum MIC value observed for compound 42, which increased 5 dilutions, from 0.125 μg/ml to 4 μg/ml, in the presence of mouse serum.
The only exception was the HSP90 target, for which active compounds were characterized by the absence of well-populated, selective HB and coulomb contacts.
The only exception is compound 2, which has the TCE sulfate group in ortho position to the other phenyl ring.
An exception is ChemAxon Compound Registration [2] which runs on MySQL.
Exceptions were the two pairs of isobaric compounds glucuronic/galacturonic acid and methylmalonic/succinic acid, which could only be distinguished by their retention time.
Given its high charge-to-size ratio, boron bonds covalently in nearly all of its compounds; the exceptions are the borides as these include, depending on their composition, covalent, ionic and metallic bonding components.
The exception was musk compounds, whose sediment influx was fairly steady from the 1950s to the mid-1990s.
The only exception was compound with ID number 4640 which changed its inhibitory properties after prolonged storage in DMSO at room temperature.
The exception is Sheik Yassin, who uses a wheelchair and lives in a compound in the slums of the city with guards, assistants and office workers.
