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Ethyl 4-bromooxazole-5-carboxylate: BD2230761258283-17-897%; ￥5024.025g

Ethyl oxazole-5-carboxylate: BD26845118994-89-197%; ￥211.010g

Ethyl 2-vinyloxazole-5-carboxylate: BD2719161257266-93-595% +(stabilized with MEHQ); ￥3229.01g

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