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EC number: 404-240-0
CAS number: 95962-14-4
NECTALACTONE; NECTARYL; NECTARYL-LRG 1371
All Bioconcentration factors of Peaks 1, 2 and 3 were below 300 L/lg wet
wt. throughout the entire uptake phase. A steady-state was reached by
28 days and steady state BCF values were 150 L/kg (wet wt.) for Peak 1,
92 L/kg (wet wt.) for Peak 2 and 180 - 200 L/kg (wet wt.) for Peak 3.
Two peaks derived from metabolites of the test item were detected on the
mass chromatograms with a fragment of m/z 121 in test fish at exposure
Levels 1 and 2. Chemical structures of these metabolites could not be
elucidated. BCFs calculated using the sum of the test item and the
metabolite on Day 28 were 190 and 200 L/kg (wet wt.) at Level 1 (20 ppb
nominal exposure) and 170 and 210 L/kg (wet wt.) at exposure Level 2 (2
ppb nominal). The two metabolite peaks, as for Peaks 1, 2 and 3 of the
Parent, had attained steady-state before the end of the 28-day exposure
Under the test conditions applied, Nectaryl (Peaks 1, 2 and 3) was
observed to have a low potential to bioaccumulate in Common Carp.
Although two metabolites with unknown chemical structures were detected
on the chromatograms of test fish analysis, BCFs calculated using the
sum of the Test Item and the metabolites were under 210 L/kg (wet wt.).
These results indicate that Nectaryl presents only low risk to
bioaccumulate in fish.
BCFsteady state Common Carp :
Peak 1 - 150 L/kg (wet wt)
Peak 2 - 92 L/kg (wet wt)
Peak 3 - 180 - 200 L/kg (wet wt)
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