O-Phospho-D-Serine (CAS No 73913-63-0) is an important compound in the field of biochemical and biomedical research primarily utilized in studies related to cellular signaling and metabolic pathways It originates as a derivative of D-serine with a phosphate group attached and it plays a crucial role in amino acid phosphorylation mechanisms O-Phospho-D-Serine s activity is typically observed in the nanomolar to low micromolar range making it a potent agent for various biochemical assays It is commonly applied in in vitro studies using cell models to investigate neural pathways and metabolic processes Additionally animal studies often employ it to understand its effects on neurotransmission and phospholipid metabolism O-Phospho-D-Serine is also used in drug screening as a reference compound to evaluate the effects of novel drugs on serine phosphorylation Experimental concentrations typically depend on the specific research design