Multiple Choice
A D-aldopentose is subjected to Kiliani-Fischer chain lengthening and the resulting mixture is oxidized using nitric acid. The two distinct products both show optical activity. From this one can conclude that the original D-aldopentose ________.
A) must be D-ribose
B) is either D-ribose or D-arabinose
C) must be D-xylose
D) is either D-xylose or D-arabinose
E) must be D-lyxose
Correct Answer:

Verified
Correct Answer:
Verified
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