In the context of chemical manufacturing, "OSR EA" does not seem to correspond to a widely recognized or standard industry term or acronym as of my last knowledge update in September 2021. The significance of acronyms and terms can vary from one organization or industry to another, and new terms may have emerged since then. Therefore, it's possible that "OSR EA" refers to a specific concept or technology that has been developed or become relevant in the chemical manufacturing industry after my last knowledge update.

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IUPAC Name：N1,N3-bis(2-sulfanylethyl)benzene-1,3-dicarboxamide
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cas 351994-94-0
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To provide a more accurate explanation, I would need additional context or a more specific definition of what "OSR EA" stands for in this particular context. If you can provide more details or clarify the meaning of this acronym, I'd be happy to offer insights into its role in chemical manufacturing or any related information available up to my last update in September 2021.