m-Cresol-PFB derivative

2,2-Bis(bromomethyl)-1,3-propanediol, 100 µg/ml,

Trimethoprim, >99%, 1g

Tm/Ts Mixture Tm – 0615,27 17alpha(H)-22,29,30-Trisnorhopane Ts – 2635,27 18alpha(H)-22,29,30-Trisnorneohopane With a spesific ratio between the two peaks based on a SIM spectra of ion m/z = 191