Building blocks Categories: All Dyes TCOs Tetrazines BCN Building blocks Silver silica gel All / rel-(1R,8S,9r)-Bicyclo[6.1.0]non-4-ene-9-carboxylic acid from $320.00 Bicyclo[6.1.0]non-4-ene-9-carboxylic acid ethyl ester from $130.00
![rel-(1R,8S,9r)-Bicyclo[6.1.0]non-4-ene-9-carboxylic acid](https://images.squarespace-cdn.com/content/v1/6860429f44f55668b784b9e1/a6e3049c-37fb-4821-91b5-3296ab78a145/rel-%281R%2C8S%2C9r%29-Bicyclo%5B6.1.0%5Dnon-4-ene-9-carboxylic+acid.png)
![Bicyclo[6.1.0]non-4-ene-9-carboxylic acid ethyl ester](https://images.squarespace-cdn.com/content/v1/6860429f44f55668b784b9e1/9ef2d8a7-02b1-40ae-b5ea-441f1698fe09/Bicyclo%5B6.1.0%5Dnon-4-ene-9-carboxylic+acid+ethyl+ester.png)