4-Hydroxy Estrone-d4 is a deuterated internal standard used for analytical quantification in research. It contains four deuterium atoms at specific positions, allowing precise measurement in mass spectrometry.
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CAS 81586-98-3
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XQZVQQZZOVBNLU-RFZGAVBWSA-N
[2H]C1=C(C(=C(C2=C1[C@H]3CC[C@]4([C@H]([C@@H]3CC2)CC(C4=O)([2H])[2H])C)O)O)[2H]