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SHEET /m/beta-hydroxy-beta-methylbutyric-acid · PubChem CID 69362 · CAS 625-08-1 · REV 2026.07

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β-Hydroxy β-methylbutyric acid

from source

C5H10O3 · 118.13 g/mol

β-Hydroxyisovaleric acid · Hydroxymethylbutyrate · HMB · beta-Hydroxyisovalerate

What is β-Hydroxy β-methylbutyric acid?

HMB, what the body makes from a small share of the leucine it breaks down. It is sold as a supplement aimed at slowing muscle loss. from source

CategoryNutrient
Chemical familyAlcoholsCarboxylic Acids
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Fig. 1 · 2D structure RDKit

SMILESCC(C)(CC(=O)O)O

Toxicity & hazards

WarningIrritantH315, H319, H335from source

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Where β-Hydroxy β-methylbutyric acid leads

Relatedcomputed
Calcium β-hydroxy-β-methylbutyrate52% similarBoth carry an alcohol group.Citric acid50% similarBoth carry an alcohol and a carboxylic acid group.Propionic acid39% similarBoth carry a carboxylic acid group.

Sources & methodology

PubChem CID
69362
Wikidata
Q223081
Structure
PubChem → RDKit
Similar molecules
MoleculeFinder fingerprint similarity
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