(2S,3R)-3-Hydroxy-2-(4-methoxyphenyl)-2,3-dihydrobenzo[b][1,4]thiazepin-4(5H)-one is an impurity of Diltiazem which is utilised to treat high blood pressure and to control chest pain. It belongs to a class of medications known as calcium-channel blockers. It acts by relaxing the blood vessels so the heart does not have to pump as hard. It also helps in increasing the supply of blood and oxygen to the heart.
References
“Diltiazem: MedlinePlus Drug Information.” Medlineplus.gov, 2017, medlineplus.gov/druginfo/meds/a684027.html.
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