“…The most complete collection of spectra of any one class is the American Petroleum Institute Project 44 on hydrocarbons referred to above. Among the classes of compounds studied are: conjugated double bond systems such as di-, tri-, and tetraenes, azines, and furals (40), nucleic acids (89), methylcyclopropanes (27), penicillins (22,112), deuterated benzenes (8)(9)(10)(11), orthosubstituted cyclohexanones (51), urinary ketosteroids (87,(108)(109)(110)(111), disubstituted benzenes (82, 85), Pennsylvania lubricating oils (139), synthetic rubber (25, 61, 97, 144), the carbonyl stretching vibration in steroids (151, 153) and in ketones (50), drying oils (164), amino acids and their complexes (163,(174)(175)(176)(177), polyalkylene sulfides (189), alkylphenols (161), cyclopentanes and cyclohexanes (218), tocopherols and related molecules (237), fatty acids (226), octenes dienes, and mono-olefins (227)(228)(229)(230), dicarboxylic acids (242), indoles (249-251), useful infrared solvents (278), organosilicon polymers (301), and cresols, xylenols, and cresvlic acids (287).…”