nandrolone formate nandrolone formate nandrolone formate, also known as nandrolone carboxylate or nandrolone methanoate, as well as 19-nortestosterone 17β-formate or estr-4-en-17β-ol-3-one 17β-formate, is a synthetic, injected anabolic–androgenic steroid (aas) and a derivative of 19-nortestosterone (nandrolone) that was never marketed. it is an androgen ester – specifically, the c17β formate ester of nandrolone. relative affinities (%) of nandrolone and related steroids compoundprarergrmrshbgcbg nandrolone20154–155<0.10.51.61–160.1 testosterone1.0–1.2100<0.10.170.919–823–8 estradiol2.67.91000.60.138.7–12<0.1 notes: values are percentages (%). reference ligands (100%) were progesterone for the pr, testosterone for the ar, estradiol for the er, dexamethasone for the gr, aldosterone for the mr, dihydrotestosterone for shbg, and cortisol for cbg. sources: see template. nandrolone formateclinical dataother namesnandrolone carboxylate; nandrolone methanoate; 19-nortestosterone 17β-formate; estr-4-en-17β-ol-3-one 17β-formateroutes ofadministrationintramuscular injectiondrug classandrogen; anabolic steroid; androgen ester; progestogenidentifiers iupac name phenanthren-17-yl] formate cas number38937-24-5 ychemspider58190210uniitvj7jk7uhzchemical and physical dataformulac19h26o3molar mass302.414 g·mol−13d model (jsmol)interactive image smiles c12cc3(ccc4=cc(=o)cc34)1cc2oc=o inchi inchi=1s/c19h26o3/c1-19-9-8-15-14-5-3-13(21)10-12(14)2-4-16(15)17(19)6-7-18(19)22-11-20/h10-11,14-18h,2-9h2,1h3/t14-,15+,16+,17-,18-,19-/m0/s1key:vtjpcihyjupqqw-zofhrbrssa-n