Prostaglandin D2 dopamine-d4 (PGD2 dopamine-d4) is intended for use as an internal standard for the quantification of PGD2 dopamine (Item No. 9002504) by GC- or LC-mass spectrometry. PGD2 dopamine is a conjugate of the neurotransmitter dopamine and PGD2 that can be used to study the biological function of PGD2 in the brain and periphery.WARNING This product is not for human or veterinary use.