Description General description Acetonitrile-d3 (Trideuteroacetonitrile, CD3CN) is a deuterated NMR (Nuclear Magnetic Resonance) solvent. Molecular rotational friction coefficient and magnetic relaxation times (T1) for 14N and 2D of CD3CN have been determined. It participates as solvent during the synthesis of 2-phenylindole. It serves as solvent for 1H NMR (Proton Nuclear Magnetic Resonance) and 13C NMR (Carbon-13 Nuclear Magnetic Resonance) spectral studies. Application Acetonitrile-d3 has been used as a deuterated solvent for the dissolution of internal standard and sample in qNMR (Quantitative Nuclear Magnetic Resonance) quantification experiments. It has also been used as the deuterated solvent in the synthesis of N-methyl indolylfulgimide, which is studied using UV-pump-IR-probe spectroscopy. Packaging 10×0.6, 10×0.75, 10×1 mL in ampule 100 g in Sure/Seal™ 10, 25, 50 g in glass bottle 5, 10 g in ampule