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Alkyl halides are reduced to the alkanes by LiBHEt 3. [3] [4] [2]LiBHEt 3 reduces a wide range of functional groups, but so do many other hydride reagents. Instead, LiBHEt 3 is reserved for difficult substrates, such as sterically hindered carbonyls, as illustrated by reduction of 2,2,4,4-tetramethyl-3-pentanone.
[3] NGC 339 is about 6.3 billion years old. Its estimated mass is 5.7 × 10 4 M ☉, and its total luminosity is 7.2 × 10 4 L ☉, leading to a mass-to-luminosity ratio of 0.79 M ☉ /L ☉. [3] All else equal, older star clusters have higher mass-to-luminosity ratios; that is, they have lower luminosities for the same mass. [3]
714 = 2 × 3 × 7 × 17, 715 = 5 × 11 × 13, and 2 + 3 + 7 + 17 = 5 + 11 + 13 = 29. There are different variations in the definition, depending on how many times to ...
iras 00276+0149, ugc 301, mcg +00-02-063, pgc 1844, cgcg 383-032 [1] NGC 132 is a spiral galaxy in the constellation Cetus . Its velocity with respect to the cosmic microwave background is 5015 ± 25 km/s, which corresponds to a Hubble distance of 241.3 ± 16.9 Mly (73.97 ± 5.19 Mpc ). [ 1 ]
Crystal HD includes single chip high-definition advanced media processors BCM70012 (codenamed Link) and BCM70015 (codenamed Flea); [2] these chips are available on mini PCIe cards. [ 3 ] [ 4 ] The BCM970012 supports hardware decoding of H.264/MPEG-4 AVC , VC-1 , WMV9 and MPEG-2 and the BCM970015 additionally supports DivX 3.11, 4.1, 5.X, 6.X ...
It was founded in 1910 by William H. Rorer, a Pennsylvania pharmacist. [1] The business operated as a small concern, primarily selling pain relievers manufactured elsewhere. It wasn't until after World War II that the company's fortunes forever changed with the introduction of Maalox which would become the world's best selling antacid. [2]
Well, so far this winter, Boras has proven that he’s still a force to be reckoned with. January is less than a week old, and thus far this offseason, Boras Corp. has earned its 12 already-signed ...
Tustin (mostly in the 657/714 area code) The city of Costa Mesa is divided between area codes 949 and 714, being split at Wilson Street and along Newport Boulevard. A small section of Irvine also uses 714, from the north side of Culver Drive at Interstate 5 to Jamboree Road in the Marketplace, in the neighborhood of Northpark Irvine.