纯度95%  告知货期和价格  需要LC-MS 核磁报告

dihydro-2H-pyran-2,5(6H)-dione

CAS:60833-12-7
Chemical Formula: C5H6O3
Molecular Weight: 114.1000
m/z: 114.0317 (100.0%), 115.0350 (5.4%)
Elemental Analysis: C, 52.63; H, 5.30; O, 42.07