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The diketene acetal 3,9-diethylidene-2,4,8,10-tetraoxaspiro [5.5]undecane, DETOSU, is a reactive bifunctional monomer that forms biodegradable polyorthoesters by polyaddition with α,ω-diols . Polyorthoesters are used as embedding media for pharmaceuticals in extended release formulations for controlled drug release by surface erosion under ...
Infobox references. 3,9-Divinyl-2,4,8,10-tetraoxaspiro [5.5]undecane ( DVTOSU) is a bicyclic organic molecule having a central quaternary carbon atom (a spiro atom) with which two alicyclic rings are linked, each comprising five atoms. DVTOSU is a diallyl acetal and the precursor for the isomeric ketene acetal monomer 3,9-diethylidene-2,4,8,10 ...
At least 100 mating cycles are specified. The return loss at 6 GHz is at least 32 dB (and higher at lower frequencies). Due to the smaller conductors, the power rating is generally lower than DIN 7/16. Most manufacturers rate their 4.3-10 connectors for 500 Watt at 2 GHz and 700 Watt at 1 GHz. [8] [9] [10]
The variance in yield from year to year was reduced, equivalent to a yield increase of 0.8–4.2 bushels per acre. Bushel per acre yield changes were +6.4 for European corn borer resistance, +5.76 for glufosinate tolerance, −5.98 for glyphosate tolerance and −12.22 for corn rootworm resistance.
Infobox references. 2,3,7,8-Tetrachlorodibenzo-p-dioxin ( TCDD) is a polychlorinated dibenzo -p- dioxin (sometimes shortened, though inaccurately, to simply 'dioxin') [ 3] with the chemical formula C 12 H 4 Cl 4 O 2. Pure TCDD is a colorless solid with no distinguishable odor at room temperature.
In 1974, there was a dramatic escalation in the world price that peaked at around US$0.67 per pound of sugar. In succeeding two consecutive years, world prices of sugar fell to less than US$0.10, the price remained low until it rose before the decade ended. During the early 1980s, world sugar prices fell again, with US$0.03 per pound as the bottom.
The outlook cut follows a 0.3% decline in April-June revenues from the U.S. dialysis treatments, when adjusted for price effects. FMC's shares dropped 9% to 34.06 euros per share in early trading ...
10-Deacetylbaccatins are a series of closely related natural organic compounds isolated from the yew tree (Genera Taxus ). 10-Deacetylbaccatin III is a precursor to the anti-cancer drug docetaxel (Taxotere). 10-deacetylbaccatin III 10- O -acetyltransferase converts 10-deacetylbaccatin to baccatin III :