Table 1. Deuterated carbohydrates.

Carbohydrate	M R (1H) a	M R (2H) b	% 2H c (NMR)
Glu-OMe	194	217–220	67
Gal-OMe	194	217–219	40
Man-OMe	194	217–219	51
Arab-OMe	164	188–190	49
Trehalose	342	365–369	62

^aMolar mass of starting carbohydrate.

^bMain peak range in ESI-MS following deuteration of carbohydrate [M + Na]⁺.

^cAverage deuteration as evaluated by ¹H NMR.