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squaric acid diethyl ester
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3,4-diethoxycyclobut-3-ene-1,2-dione
5231-87-8
pharmaceutical intermediates
pharmaceutical intermediates
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Chengdu Green Chem Co.,Ltd
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86-28-83269692
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86-28-83275150
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sales@greenchemical.cn
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No. 36 taixing road,
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