Why my Rucaparib is so yellow?

Rucaparib, FDA approved new drug will be a big potential drug.

Original Route of Synthesis of  Rucaparib yield is about 10%, impurity is 2%, unknown impurity is 1%.

EOS Med Chem use the new Route of Synthesis of Rucaparib, yield improve 30%.

Reduced Rucaparib synthesis steps, Remove unknown impurity, Remove Toxic Chemicals， Impurity is less than 1%, Assay more than 99%, Water by KF less than 0.5%.

Below is EOS Med Chem Route of Synthesis of Rucaparib, each steps we have MSDS, COA, if you have interesting, pls contact me.

My Rucaparib color is very yellow, most of China is dark color, my impurity is very good.

Pls kindly check

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