nitrogen mustard(redirected from MOPP)
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One of a group of toxic organic compounds that are structurally similar to mustard gas but contain nitrogen instead of sulfur, used primarily as chemotherapeutic agents.
(Elements & Compounds) any of a class of organic compounds resembling mustard gas in their molecular structure. General formula: RN(CH2CH2Cl)2, where R is an organic group: important in the treatment of cancer