Eosin Y

CAS NO: 17372-87-1

Chemical Formula: C₂₀H₈Br₄O₅

Exact Mass: 643.71
Molecular Weight: 647.90
m/z: 647.71 (100.0%), 645.71 (68.5%), 649.70 (64.9%), 648.71 (18.4%), 643.71 (17.6%), 651.70 (15.8%), 646.71 (14.8%), 650.71 (14.0%), 644.71 (3.8%), 652.71 (3.4%), 648.71 (3.2%), 649.71 (2.2%), 647.72 (1.5%), 651.71 (1.4%), 649.71 (1.0%)
Elemental Analysis: C, 37.08; H, 1.24; Br, 49.33; O, 12.35