we initiated these studies to determine whether bifunctional ( interstrand cross-linking ) psoralens , such as 8-methoxypsoralen ( 8-mop ) , are more carcinogenic than are the monofunctional , such as angelicin or isopsoralen derivatives , and 3-carbethoxysporalen ( 3-cp ) .
C0033858
psoralens
C0025684
8-methoxypsoralen