Photoresist Chemicals 1H-Naphtho[2,1-b]pyran-3-acetic acid,dodecahydro-3,4a,7,7,10a-pentamethyl-,(3R,4aS,6aR,10aR,10bS)- Cas：58917-31-0 Molecular Formula：1H-Naphtho[2,1-b]pyran-3-acetic acid,dodecahydro-3,4a,7,7,10a-pentamethyl-,(3R,4aS,6aR,10aR,10bS)-