esiRNA is a pooled product with a variable molecular weight. The molecular weight can be estimated using the following information:
- Calculation of esiRNA molar mass
- A high percentage of the esiRNA pool is 21 bp
- The average molar mass of one base including sugar and phosphate is 345 g/mol.
- For an esiRNA (always double stranded) of 21 bp, the average molar mass can be calculated as follows: 2 x 21 x 345 = 14,490 g/mol
For additional information please refer to the esiRNA technical bulletin in the link below:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/786/318/cstesirnabul.pdf