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Details

Stereochemistry RACEMIC
Molecular Formula C12H18Cl2N2O
Molecular Weight 277.19
Optical Activity ( + / - )
Defined Stereocenters 0 / 1
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of CLENBUTEROL

SMILES

CC(C)(C)NCC(O)C1=CC(Cl)=C(N)C(Cl)=C1

InChI

InChIKey=STJMRWALKKWQGH-UHFFFAOYSA-N
InChI=1S/C12H18Cl2N2O/c1-12(2,3)16-6-10(17)7-4-8(13)11(15)9(14)5-7/h4-5,10,16-17H,6,15H2,1-3H3

HIDE SMILES / InChI

Description

Clenbuterol is agonist of beta2 adrenergic receptor. In some countries it is used as bronchodilator for treatment of asthma, but is not approved in USA. The drug is abused by bodybuilders and athletes for its ability to increase lean muscle mass and to reduce body fat. In 1998 FDA approved the clenbuterol-based Ventipulmin Syrup as a prescription-only drug for treatment of airway obstruction in horses.

CNS Activity

Originator

Approval Year

Targets

Primary TargetPharmacologyConditionPotency
570.0 nM [Ki]

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
SPIROPENT
Primary
CLENBUTEROL

Cmax

ValueDoseCo-administeredAnalytePopulation
133.2 ng/L
40 μg single, oral
CLENBUTEROL plasma
Homo sapiens
329.7 mg/L
40 μg 1 times / day steady-state, oral
CLENBUTEROL plasma
Homo sapiens

AUC

ValueDoseCo-administeredAnalytePopulation
4889.4 ng × h/L
40 μg single, oral
CLENBUTEROL plasma
Homo sapiens
14164.8 ng × h/L
40 μg 1 times / day steady-state, oral
CLENBUTEROL plasma
Homo sapiens

T1/2

ValueDoseCo-administeredAnalytePopulation
26.56 h
40 μg single, oral
CLENBUTEROL plasma
Homo sapiens
33.15 h
40 μg 1 times / day steady-state, oral
CLENBUTEROL plasma
Homo sapiens

Funbound

ValueDoseCo-administeredAnalytePopulation
2%
80 μg single, oral
CLENBUTEROL plasma
Homo sapiens

Doses

AEs

PubMed

Sample Use Guides

In Vivo Use Guide
For treatmen of airways obstruction the clenbuterol is administered orally, 15ml of syrop 2-3 times a day.
Route of Administration: Oral
In Vitro Use Guide
Affinity towards beta2 adrenergic receptors was measured using the recombinant receptor expressed in Sf-9 cells. Cell membrane homogenates were incubated with 0.15 nM of radioligand [3H]CGP1217 in the absence of presence of the clenbuterol. Following incubation, the samples were filtered rapidly under vacuum through through glass fiber filters, the filters were dried, and counted for radioactivity in a scintillation counter. Clenbuterol was binding to beta2 receptor with Ki of 0.58 uM.