primary reference standard
limited shelf life, expiry date on the label
HWI
>300 °C (lit.)
food and beverages
Oc1ccc(cc1)C2=CC(=O)c3c(O)cc(O)cc3O2
1S/C15H10O5/c16-9-3-1-8(2-4-9)13-7-12(19)15-11(18)5-10(17)6-14(15)20-13/h1-7,16-18H
KZNIFHPLKGYRTM-UHFFFAOYSA-N