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[Benzaldehyde, 4,4'-[(2,5-dimethoxy-1,4-phenylene)di-2,1-ethynediyl]bis-]

[Benzaldehyde, 4,4'-[(2,5-dimethoxy-1,4-phenylene)di-2,1-ethynediyl]bis-]

Shanghai Vigen Fine Chemical Co., Ltd.

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