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squaric acid dibutylester
3,4-dibutoxycyclobut-3-ene-1,2-dione
2892-62-8
pharmaceutical intermediates
pharmaceutical intermediates
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Chengdu Green Chem Co.,Ltd
ÀüÈ­¹øÈ£ 86-28-83269692
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ÁÖ¼Ò No. 36 taixing road,
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