They didn't succeed in tracking him to the suspicious compound, in which bin Laden resided, until last August.
Witnesses described a series of helicopter attacks near the compound in which at least one armoured vehicle was destroyed.
Modern research has shown, however, that there are in fact certain classes of compound in which the composition is variable.
(A thioester is a compound in which the linking oxygen in an ester is replaced by a sulfur atom).
A macronutrient is the actual chemical form or compound in which the macroelement enters the root system of a plant.
He says that in many ways he found the ex-pat compound in which he and his family lived in Saudi Arabia more progressive than Britain.
The compound in which the carbon atoms are linked in a straight chain is denoted normal butane, or n-butane; the branched-chain form is isobutane.
Among the evidence were letters written by Osama bin Laden, discovered during the May 2011 raid on his compound in which he was killed, requesting materials from WikiLeaks.
The class includes such compounds as ferrocene, a remarkably stable compound in which an iron atom is sandwiched between two hydrocarbon rings.
In this reaction, a peroxide (a compound in which two oxygen atoms are joined together by a single covalent bond) may be used as the initiator.
Israel's claims to the contrary, the initial investigation by the United Nations Relief and Works Agency confirms that there was no gunfire from the United Nations compound in which Iain Hook, a staff member, was killed by the Israeli Army.
