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Which statements are correct about lacto...

Which statements are correct about lactose?

A

IUPAC name of lactose is `beta-` galactopyranosyl-`beta`-D-glucopyranoside.

B

IUPAC name of lactose is `beta-D`-glucopyranosyl `beta-D`- galactopyranoside

C

On methylation with `MeOH//HCl`, it gives methyl-`beta`- D-glactopyranosyl- `beta`-D-glucopyranoside.

D

On methylation with `MeOH//HCl`, it gives methyl- `beta`-D-glucopyranosyl-`beta`-D-galactopyranoside.

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
Since `C-1 OH` group in `beta-D-`glucose is hemiacetalic, so with `MeOH//HCl`, this `OH` group is methylated to form acetal. Thus with `beta-D-`glucose, the word glucopyranoside is named.
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