Seeking strange nucleotides (isoCTP and isoGTP)

[Pierce Chemical Co]

Hello!  I am looking for two "strange" nucleotides:  
2'deoxyisocytidine-5'triphosphate; and 2' deoxyisoguanosine-5' triphosphate (d-isoCTP 
and d-isoGTP).  Does anybody know where to find these?  

Also, does anybody sell the RNA versions (isocytidine-5'triphosphate and 
isoguanosine-5'triphosphate)?

Finally, does anyone know of a company that sells other strange nucleotides, such as 
psoralen- or acridine-linked nucleotides?  


Thanks for your help!

Edward Beaty
Research Associate
Pierce Chemical Co

E-mail: PierceChem at mcimail.com