4-hydroxybenzoic acid-D2

4-hydroxybenzoic acid-D2, also known as para-hydroxybenzoic acid-D2 or PHB-D2, is a deuterated form of 4-hydroxybenzoic acid. It is a white crystalline powder that is sparingly soluble in water but soluble in organic solvents such as ethanol and acetone. The deuterium substitution at position 2 of the phenyl ring in PHB-D2 provides a useful tool for studying the chemical and biological properties of 4-hydroxybenzoic acid. PHB-D2 is commonly used as a reference standard in various analytical techniques such as nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry. Its chemical and physical properties are identical to those of non-deuterated 4-hydroxybenzoic acid, except for the difference in the mass of the molecule due to the presence of deuterium atoms. In addition to its use as a reference standard, PHB-D2 has potential applications in the pharmaceutical and cosmetic industries. 4-hydroxybenzoic acid is a common ingredient in many skin care products due to its anti-inflammatory and antioxidant properties. PHB-D2 can be used as a tracer molecule to study the metabolism and pharmacokinetics of 4-hydroxybenzoic acid in the body. Overall, PHB-D2 is a valuable tool for researchers and industries interested in studying the properties and applications of 4-hydroxybenzoic acid.