132464-92-7, 3,4-二羟基苯亚甲基氰乙酸乙酯, ETHYL 3,4-DIHYDROXY-BENZYLIDENECYANOACETATE
314 771 5765
http://www.sigma-aldrich.com
+86 20 28069055
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+86 1831242129
+852 2390 2293
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847 281 9822
http://www.3bsc.com
+86 21 64251348
http://www.fwdchem.com
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