Hey, wanna know what cas nr. the real/best OPCE is. I saw different ones. One is:
Name: 2'-OXO-PCE HYDROCHLORIDE
CAS: 4551-92-2
Formula: C14H19NO.ClH
DTXSID701337097
Another:
Name: 2'-OXO-PCE
CAS: 6740-82-5
Formula: C14H19NO
DTXSID601024409
Can one be absorbed the other not?
Name: 2'-OXO-PCE HYDROCHLORIDE
CAS: 4551-92-2
Formula: C14H19NO.ClH
DTXSID701337097
Another:
Name: 2'-OXO-PCE
CAS: 6740-82-5
Formula: C14H19NO
DTXSID601024409
Can one be absorbed the other not?