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(R)-1,1-Bis(4-methoxyphenyl)-3-methylbutane-1,2-diamine, 98%, Ambeed, #A550033 (CAS: 166764-19-8)
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(2R)-(+)-1,1-Bis(4-methoxyphenyl)-3-methyl-1,2-butanediamine, min. 97% (R)-DAIPEN, Strem Chemicals, #07-0210 (CAS: 166764-19-8)
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