It is a weak Lewis acid, forming adducts with pyridine and methylamine. CH-NH-CH is 10.73, a value above methylamine (10.64) and trimethylamine (9.79). Liquid methylamine has solvent properties analogous to those of liquid ammonia. "N"-Methylethanolamine is produced industrially by reacting ethylene oxide with excess methylamine in aqueous solution. Other amines, such as methylamine and ethylamine, are also suitable solvents. Methylurea, precursor to theobromine, is produced from methylamine and urea. The new method Walt chooses is a reductive amination reaction, relying on phenyl-2-propanone and methylamine. It also contains syntheses for precursor materials such as phenylacetone, ephedrine, methylamine, and alkyl nitrites. It is the salt formed by the neutralization of methylamine with nitric acid. Maltose can easily be detected by the Woehlk test or Fearon's test on methylamine. It can be obtained by reaction of hydroquinone with methylamine. In the laboratory, methylamine hydrochloride is readily prepared by various other methods. The latter is again metabolized by ADH to methylamine and carbon dioxide (Q). Alternatively, phenylacetone can be reacted with methylamine under reducing conditions to yield methamphetamine. In the laboratory, it may be synthesized from chloroacetic acid and methylamine.