A 2023 (OTTO) Ammonia ca. 7N solution in methanol Cas 7664-41-7 - used in the preparation of trioxolanes. A 2023 (OTTO) Ammonia ca. 7N solution in methanol Cas 7664-41-7 - used in the preparation of hydrogen halide salts (HX) of primary amines under microwave irradiation.