R0908
R1881
≥98% (HPLC), Androgen receptor agonist, powder
Synonym(s):
(17b)-17-Hydroxy-17-methyl-Estra-4,9,11-trien-3-one, Methyltrienolone, Metribolone, NSC 92858, RU 1881
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About This Item
Empirical Formula (Hill Notation):
C19H24O2
CAS Number:
Molecular Weight:
284.39
UNSPSC Code:
51111800
PubChem Substance ID:
NACRES:
NA.77
MDL number:
Product Name
R1881, ≥98% (HPLC)
Quality Level
assay
≥98% (HPLC)
form
powder
optical activity
[α]/D -48 to -68°
drug control
USDEA Schedule IIIN; Home Office Schedule 4.2; regulated under CDSA - not available from Sigma-Aldrich Canada
color
light yellow to yellow
solubility
DMSO: ≥10 mg/mL
storage temp.
2-8°C
SMILES string
C[C@]1(O)CC[C@H]2[C@@H]3CCC4=CC(=O)CCC4=C3C=C[C@]12C
InChI
1S/C19H24O2/c1-18-9-7-15-14-6-4-13(20)11-12(14)3-5-16(15)17(18)8-10-19(18,2)21/h7,9,11,16-17,21H,3-6,8,10H2,1-2H3/t16-,17+,18+,19+/m1/s1
InChI key
CCCIJQPRIXGQOE-XWSJACJDSA-N
Biochem/physiol Actions
Androgen receptors (ARs) are nuclear hormone receptors/transcription factors. R1881, also known as methyltrienolone, is a synthetic androgen. It is the gold standard AR agonist.
R1881 (methyltrienolone) is a potent synthetic androgen.
Features and Benefits
This compound is featured on the Nuclear Receptors (Steroids) page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Robert S Hudson et al.
Molecular cancer, 12, 13-13 (2013-02-16)
Ultraconserved regions (UCR) are genomic segments of more than 200 base pairs that are evolutionarily conserved among mammalian species. They are thought to have functions as transcriptional enhancers and regulators of alternative splicing. Recently, it was shown that numerous RNAs
Annelies Van Hemelryk et al.
Biomolecules, 11(11) (2021-11-28)
Organoid-based studies have revolutionized in vitro preclinical research and hold great promise for the cancer research field, including prostate cancer (PCa). However, experimental variability in organoid drug testing complicates reproducibility. For example, we observed PCa organoids to be less affected
Nader Al Nakouzi et al.
European urology, 68(2), 228-235 (2014-05-20)
Cabazitaxel, abiraterone acetate (AA), and enzalutamide have been approved for the treatment of patients with metastatic castration-resistant prostate cancer (mCRPC) following docetaxel chemotherapy. Whether taxanes and next-generation androgen receptor (AR) axis inhibitors are cross-resistant or not is a subject of