https://www.andreabarghi.com/shop/cell25sk22664-12389-pentachloro-dibenzo-p-dioxin-13c12-41896
1,2,3,8,9-Pentachloro-dibenzo-p-dioxin-13C12 | Andrea Barghi
https://webbook.nist.gov/cgi/inchi/InChI%3D1S/C12H2BrCl5O2/c13-3-1-5(15)9-11(7(3)17)20-12-8(18)4(14)2-6(16)10(12)19-9/h1-2H
Dibenzodioxin, 2-bromo-, 1,4,6,8,9-pentachloro-
bromo
https://www.detoncorp.com/shop/cell25sk22660-12378-pentachloro-dibenzo-p-dioxin-13c12-41892
1,2,3,7,8-Pentachloro dibenzo-p-dioxin-13C12 | Deton Corp