• CasNo:159752-10-0
  • Molecular Formula:C<sub>28</sub>H<sub>40</sub>N<sub>4</sub>O<sub>8</sub>S<sub>2</sub>
  • Purity:
  • Molecular Weight:624.78

Product Details

We export high quality MK-677 (CAS 159752-10-0), in stock, factory directly supply to clients, lower prices, more competitiveness.

What is the MK-677 ?

MK-677 (ibutamoren)  is an orally active growth hormone secretagogue, while it's Molecular Formula is CH4O3S*C27H36N4O5S. Also of note, Nutrabol (MK 677) although technically a growth hormone secretagogue and not a SARM, was classified as a SARM in some studies.

What is the CAS number for MK-677 ?

The CAS number of MK-677 is 159752-10-0.

More information of MK-677 159752-10-0 are:


2-Amino-N-((R)-2-(benzyloxy)-1-((1-(methylsulfonyl)spiro(indoline-3,4'-piperidin)-1'-yl)carbonyl)ethyl)-2-methyl-propionamide monomethanesulfonate;2-Amino-N-((R)-2-(benzyloxy)-1-((1-(methylsulfonyl)spiro(indoline-3,4'-piperidin)-1'-yl)carbonyl)ethyl)-2-methylpropionamide monomethanesulfonate;Crescendo;MK-0677;UNII-R90JB6QJ2B;Propanamide, 2-amino-N-(2-(1,2-dihydro-1-(methylsulfonyl)spiro(3H-indole-3,4'-piperidin)-1'-yl)-2-oxo-1-((phenylmethoxy)methyl)ethyl)-2-methyl-, (R)-, monomethanesulfonate;

CAS Number


Molecular Formula


Molecular Weight


Boiling Point

868.9 °C at 760 mmHg

Flash Point

479.3 °C





What is MK-677 (159752-10-0) used for?

Ibutamoren, also known as MK-0677 or LUM-201, is a synthetic small-molecule GHSR agonist used as a growth hormone secretagogue in many disease settings. It wouldn't be all to involve MK 677 in the SARM category because it sort of resembles a peptide but is an HGH Secretagogue. In healthy elderly individuals, the oral administration of ibutamoren (MK-677), a non-peptide agonist of ghrelin receptors, increased serum growth hormone and IGF-1 levels without serious side effects.

InChI: InChI=1S/C27H36N4O5S.CH4O3S/c1-26(2,28)25(33)29-22(18-36-17-20-9-5-4-6-10-20)24(32)30-15-13-27(14-16-30)19-31(37(3,34)35)23-12-8-7-11-21(23)27;1-5(2,3)4/h4-12,22H,13-19,28H2,1-3H3,(H,29,33);1H3,(H,2,3,4)/t22-;/m1./s1  

Articles related to MK-677:



Structural basis of human ghrelin receptor signaling by ghrelin and the synthetic agonist ibutamoren (MK-677)

Heng Liu, Dapeng Sun, Alexander Myasnikov, Marjorie Damian, Jean-Louis Baneres, Ji Sun & Cheng Zhang

, Nature Communications volume 12, Article number: 6410 (2021)

Characterization of equine liver microsome-generated metabolites of growth hormone secretagogue small molecule ibutamoren (MK-677)

Moses Philip, Abdul Khader Karakka Kal, Michael Benedict Subhahar, Zubair Perwad, Tajudheen K. Karatt

, Rapid Communications in Mass Spectrometry, Volume35, Issue23 15 December 2021 e9201

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