Displaying 2 results of Paraformaldehyde Stable Isotopes Paraformaldehyde stable isotopes refer to the isotopically labeled forms of paraformaldehyde, a white crystalline powder commonly used as a fixative in biological and medical research. These isotopes are labeled with stable isotopes of carbon, nitrogen, and oxygen, and they are used in a variety of applications, including metabolic labeling studies, protein labeling, and drug development. Paraformaldehyde stable isotopes are highly pure and provide accurate and reliable results in research experiments.