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Table 1 Extent of primary amine acetylation as determined by 1H NMR spectroscopy.

From: Acetylation of PAMAM dendrimers for cellular delivery of siRNA

Sample

(-CH3/-CH2-) ratio

Number of acetyl groups added

Percent of primary amine acetylation

Ac20

0.041

27

21.1

Ac40

0.075

50

39.1

Ac60

0.115

76

59.4

Ac84

0.16

107

83.6