Any eukaryotic metabolite produced during a metabolic reaction in algae including unicellular organisms like chlorella and diatoms to multicellular organisms like giant kelps and brown algae.
Note that this is the ChEBI record for 1-monostearoylglycerol with unspecified stereochemistry. The ChEBI ID for racemic 1-monostearoylglycerol is CHEBI:75557.