cas no:73819-76-8
Chemical name: 4-Ethynylphthalic Anhydride Cas no: 73819-76-8 Purity:99.0%
Chemical name: 4-Ethynylphthalic Anhydride
Cas no: 73819-76-8
Purity:99.0%
Formula: C10H4O3
Package: 20g，50g，100g，1kg，as required
