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. 2012 Dec 20;2012:965280. doi: 10.5402/2012/965280

Table 2.

Formulations with different chemical enhancers and respective concentrations used.

Formulation Code Enhancer Concentration
CA1 Citric acid 1%
CA2 Citric acid 2.5%
CA3 Oleic acid 2.5%
CA4 Oleic acid 5%
CA5 Isopropylmyristate 5%
CA6 Isopropylmyristate 10%
CA7 N-lauroyl sarcosine 1%
CA8 N-lauroyl sarcosine 2%
CA9 Tween-20 1%
CA10 Tween-20 2%
CA11 Transcutol 10%
CA12 Transcutol 20%
CA13 Dimethyl sulfoxide 5%
CA14 Dimethyl sulfoxide 10%
CA15 N-methylpyrrolidone 5%
CA16 N-methylpyrrolidone 10%