(2R,3R,4S,5R,6R)-2-(acetoxymethyl)-6-(((2R,3R,4S,5R,6R)-4,5-diacetoxy-2-(acetoxymethyl)-6-((4-nitrophenyl)thio)tetrahydro-2H-pyran-3-yl)oxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate

4-Nitrophenyl hepta-O-acetyl-1-thio-b-lactoside is an inorganic molecule that binds to the surface of bacteria. It has been used as a fingerprinting tool for a variety of organisms, including corynebacterium glutamicum. The molecule can be used to measure the metabolic activity of corynebacterium glutamicum with a technique called incremental acidification. This technique is based on the observation that the concentration of 4-nitrophenol decreases by one unit for each glucose metabolized by corynebacterium glutamicum. The use of 4NPHTBL and other primers can also be useful in diagnosing patients with autoimmune diseases such as celiac disease and inflammatory bowel disease.