Nolvadex Raw Powder Tamoxifen without Citrate   Nolvadex or Tamoxifen no Citrate Tamoxifen Base not Tamoxifen Citrate. CAS number: 10540-29-1 Molecular formula: C26H29NO Molecular weight: 371.51 EINECS number: 234-118-0 What is Tamoxifen Citrate (Nolvadex) ? Nolvadex, officially known as Tamoxifen Citrate, was first developed in 1961 by ICI now AstraZeneca under the trade name Nolvadex. The SERM was developed to treat breast cancer, specifically hormone-responsive …