LG-121071

    WARNING: This product is for research use only, not for human or veterinary use.

Hodoodo CAT#: H530911

CAS#: 179897-70-2

Description: LG-121071, also known as LGD-121071, is a selective androgen receptor modulator (SARM) developed by Ligand Pharmaceuticals that was first described in 1999 and was the first orally active nonsteroidal androgen to be discovered. It is a tricyclic quinolone derivative, structurally distinct from other nonsteroidal AR agonists like andarine and enobosarm (ostarine). The drug acts as a high-affinity full agonist of the androgen receptor (AR) (Ki = 17 nM), with a potency and efficacy that is said to be equivalent to that of dihydrotestosterone (DHT).


Chemical Structure

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LG-121071
CAS# 179897-70-2

Theoretical Analysis

Hodoodo Cat#: H530911
Name: LG-121071
CAS#: 179897-70-2
Chemical Formula: C15H15F3N2O
Exact Mass: 296.11
Molecular Weight: 296.293
Elemental Analysis: C, 60.81; H, 5.10; F, 19.24; N, 9.45; O, 5.40

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales @hodoodo.com or click below button.
Note: Price will be listed if it is available in the future.

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Synonym: LG-121071; LG 121071; LG121071; LGD-121071; LGD 121071; LGD121071.

IUPAC/Chemical Name: 6-Ethyl-4-(trifluoromethyl)-1,2,6,7,8,9-hexahydropyrido[3,2-g]quinolin-2-one

InChi Key: SZPPQFARTYXRKU-UHFFFAOYSA-N

InChi Code: InChI=1S/C15H15F3N2O/c1-2-8-3-4-19-12-7-13-10(5-9(8)12)11(15(16,17)18)6-14(21)20-13/h5-8,19H,2-4H2,1H3,(H,20,21)

SMILES Code: O=C1NC2=C(C=C(C(CC)CCN3)C3=C2)C(C(F)(F)F)=C1

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

More Info: Unlike testosterone, but similarly to DHT, LG-121071 and other nonsteroidal androgens cannot be potentiated by 5α-reductase in androgenic tissues (nor aromatized into estrogenic metabolites), and for this reason, show tissue-selective androgenic effects. In accordance, they are said to possess full anabolic activity with reduced androgenic activity, similarly to anabolic-androgenic steroids. The in vitro metabolism of LG-121071 has been characterized in anticipation of its possible use as a doping agent.

Biological target:
In vitro activity:
In vivo activity:

Preparing Stock Solutions

The following data is based on the product molecular weight 296.29 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
Formulation protocol:
In vitro protocol:
In vivo protocol:

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1: Thevis M, Schänzer W. Detection of SARMs in doping control analysis. Mol Cell
Endocrinol. 2017 Jan 27. pii: S0303-7207(17)30053-9. doi:
10.1016/j.mce.2017.01.040. [Epub ahead of print] PubMed PMID: 28137616.


2: Hamann LG, Mani NS, Davis RL, Wang XN, Marschke KB, Jones TK. Discovery of a
potent, orally active, nonsteroidal androgen receptor agonist:
4-ethyl-1,2,3,4-tetrahydro-6- (trifluoromethyl)-8-pyridono[5,6-g]- quinoline
(LG121071). J Med Chem. 1999 Jan 28;42(2):210-2. PubMed PMID: 9925725.

3: Knoop A, Krug O, Vincenti M, Schänzer W, Thevis M. In vitro metabolism studies
on the selective androgen receptor modulator (SARM) LG121071 and its
implementation into human doping controls using liquid chromatography-mass
spectrometry. Eur J Mass Spectrom (Chichester). 2015;21(1):27-36. doi:
10.1255/ejms.1328. PubMed PMID: 25906032.


4: Hamann LG, Mani NS, Davis RL, Wang XN, Marschke KB, Jones TK. Discovery of a
potent, orally active, nonsteroidal androgen receptor agonist:
4-ethyl-1,2,3,4-tetrahydro-6- (trifluoromethyl)-8-pyridono[5,6-g]- quinoline
(LG121071). J Med Chem. 1999 Jan 28;42(2):210-2. PubMed PMID: 9925725.