Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Cpd | R1 | R2 |
|---|---|---|
| 313 | =O | =O |
| 314 | =O | OH |
| 315 | α-OH | CH2OH |
