Photoresist Chemicals Pregn-20-ene-3,6-diol,21-[(2S,5R)-1,5- dimethyl-2-piperidinyl]-,(3â,5R,6â,20E)- Cas：60269-68-3 Molecular Formula：Pregn-20-ene-3,6-diol,21-[(2S,5R)-1,5- dimethyl-2-piperidinyl]-,(3â,5R,6â,20E)-