SARMs

RAD-150

A drawn molecule with nothing downstream of the drawing

7 sections

Top of article
What it actually is
What it is supposed to do
What people take it for
The dose question
How to check you have the right molecule
What people get wrong
What is known about harm

What circulates: Sold as a RAD-140 ester. I found no dosing figure traceable to anything
What was studied: Nothing, in any species
The gap: No published human dose to compare against
How long it lasts: I could not find one, in any species. That is the measurement the entire ester premise rests on.

What it actually is

RAD-150, also written TLB-150, is sold as a benzoate ester of RAD-140, meaning the same molecule with a chemical group attached that the body is supposed to cut off. The molecule is real in the sense that it is drawn and registered: PubChem carries it, the CAS number is 1208070-53-4, and the arithmetic of the ester claim closes exactly, 393.8 plus 104.1 giving 497.9. Everything after the drawing is missing.

What it is supposed to do

An ester is a delivery trick rather than a different drug: attach a group, and the compound is released more slowly as the body cuts it off. That claim commits a seller to a hydrolysis rate, and I found no study measuring one for this compound in any species.

What people take it for

The same things RAD-140 is sold for, on the reasoning that it is a longer acting version of it. That reasoning has no published support the searches found.

The dose question

What circulates: Sold as a RAD-140 ester. I found no dosing figure traceable to anything
What was studied: Nothing, in any species; Searched under RAD-150, RAD150 and TLB-150 on 10 August 2026

No studied dose to compare

There is nothing to compare against. The molecule is drawn and registered, CAS 1208070-53-4, and the arithmetic of the ester claim closes exactly at 393.8 plus 104.1 equals 497.9. Everything after the drawing is missing: no paper under its name or CAS number, no registered trial, and no published analysis of what is sold under it. That is an empty file rather than a clean one, and the difference matters. Nothing published says it is harmful, because nothing published says anything about it.

Reported because it is what people use. Nothing here recommends any amount.

How long it lasts

I could not find one, in any species. That is the measurement the entire ester premise rests on.

Route studied

None. No study in any species turned up under RAD-150, RAD150 or TLB-150 in searches run on 10 August 2026.

Route used

By mouth, in the same way RAD-140 is taken. I found no published dosing figure to report.

How to check you have the right molecule

Search the name carefully, because the hyphen changes the answer. Looked up with the hyphen, PubChem returns a haloalkylamine from the 1970s that has nothing to do with this. Looked up without it, you get two records, the first being TLB 150 Benzoate at the CAS number above. A PubMed search for that CAS number returns nothing at all.

Walked through on two real certificates in how to read a certificate of analysis.

What people get wrong

An ester claim sounds like chemistry and is being used as a marketing claim. A real ester of a real compound would come with an attachment position, a hydrolysis rate and a measured conversion, and none of those appears in anything the searches reached.

What is known about harm

Nothing published says this compound is harmful, and nothing published says anything about it at all. Those are different statements and the difference is the point. There is no safety record here to be reassured by, only an absence of one.

Others in SARMs

Everything on this page is a summary. The citations, the studies and the reasoning live in the full entry.

Read the full entry on RAD-150

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