1,2-Dehydro-3-methylcholanthrene 20-Methylcholanthrylene 3-Methylbenz[j]aceanthrylene 3-Methylcholanthrylene 3343-10-0 Benz[j]aceanthrylene, 3-methyl- NSC400562 WLN: L E6 D6656 1A TJ R1