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CAS NO:69070-62-8
CAS:
69070-62-8
英文名称:
2-oxepanone, polymer with 1,4-butanediol and 4,4'-diisocyanato-3,3'-dimethyl-1,
1'-biphenyl
2-oxepanone, polymer with 1,4-butanediol and4,4'-diisocyanato-3,3'-dimethyl-1,1'-biphenyl