Table 1.

Summary of absorption line frequencies and amplitude absorbance line widths at 77 K

Material*	Film preparation	Absorption lines at 77 K†
Deoxycytidine (MW 227)	Water drop-cast (12 mg/ml)	1.62 THz (0.02 THz), 1.78 (0.03), 2.09 (0.05), 2.17(0.03), 2.30 (0.04), 2.48 (0.04), 2.76 (0.04)
Adenosine (MW 267)	Sublimation	2.10 THz (0.06 THz), 2.27 (0.02), 2.97 (0.05), 3.16 (0.05)
Thymine (MW 126)	Water drop-cast (10 mg/ml)	0.84 THz (0.09 THz), 0.99 (0.08), 2.03 (0.06), 2.5 (0.2)
D-glucose (MW 180)	Sublimation	1.89 THz (0.05 THz), 2.11 (0.04), 2.57 (0.06)
L-alanine (MW 89)	Water drop-cast (10 mg/ml)	1.43 THz (0.08 THz), 1.65 (0.05), 1.96 (0.04), 2.01 (0.03), 2.25 (0.009), 2.62 (0.03)
Glycine (MW 75)	Water drop-cast (10 mg/ml)	0.75 THz (0.15 THz), 1.27 (0.08), 1.95 (0.06), 2.11 (0.12), 2.39 (0.09), 2.85 (0.12)
Tryptophan (MW 204)	Methanol drop-cast (3 mg/ml)	1.44 THz (0.09 THz), 1.77 (0.08), 2.14 (0.12), 2.32 (0.11)

^*MW, molecular weight.

^†Values in parentheses are absorbance FWHM linewidths given in THz.