Hydrogen−deuterium exchange at 50 °C established the assignments of those two protons (19).
Because all of these substitutions are expected to cause a downshift of the νC=N in analogy with BR, this result establishes the assignment of the negative 1651 cm 1 band to the C=N stretch mode [as opposed, for example, to an amide I band (see below)].
A very similar procedure is established for the assignment of CAS registry numbers of which all available ones are stored with the molecule allowing the user to select and store one of them with a particular sample (a detailed description of the process is given in the Additional file 1).
In this regard, if another time-, cost-, and sample-saving mtDNA analysis could be also established for the assignment of ancient skeleton samples to relevant existing haplogroups, it will become a convenient method indeed for counterchecking the possible errors hidden in the conventional mtDNA sequencing.
Local agencies would have to follow "best practices" in establishing procedures, such as the assignment of an officer's supervisor to download recorded data in cases of a shooting or other use of force.
A committee was established in May 1983, which gave Engineer Harald Møyner the assignment of producing a new report.
Collectively, this approach allowed assignment of all resonances to individual residues and therefore established the topology of the rings.
We also established confident assignment of number and type(s) of modification to explain observed mass shifts in an additional 239 MS/MS spectra (i.e., ~6% of modification-containing spectra); however site(s) of modification could not be unambiguously derived from spectral evidence (Additional file 3 Table S5C).
Total organic synthesis confirmed the original structural assignment and bioactions as well as established the complete stereochemistry of natural RvE1,5 S,12 R-trihydroxy-6oxy-6 Z,8 E,10 E,14 Z,16 E-EPA [ 17].
