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(R)-(+)-1,1'-Bi-2-naphthol, R-1,1'-联-2-萘酚/25g/CAS:18531-94-7'); document.write('¥830
Isovanillin, 3-羟基-4-甲氧基苯甲醛(异香兰素)/1kg/CAS:621-59-0'); document.write('¥750