1087.18 Benzo[a]anthracene-d12 [1718-53-2] 1348.20 Benzo[b]-d12 [93951-98-5] 1088.20 Benzo[a]pyrene-d12 [63466-71-7] 1531.22 Indeno[1,2,3-cd]pyrene-d12 [203578-33-0]