97%    LC-MS  H  C谱  告知货期和价格

1-Hydroxy-3-isobutyl-4-[4-(3-methyl-but-2-enyloxy)-phenyl]-pyrrole-2,5-dione

C19H23NO4

Exact Mass: 329.16

Mol. Wt.: 329.39 m/e: 329.16 (100.0%), 330.17 (21.6%), 331.17 (3.0%)

C, 69.28; H, 7.04; N, 4.25; O, 19.43