Baby Safety / Compounds / DMPS (Unithiol / 2,3-dimercapto-1-propanesulfonic acid)

Is DMPS (Unithiol / 2,3-dimercapto-1-propanesulfonic acid) safe for babies and kids?

Moderate risk for kids

Infants are more vulnerable to DMPS (Unithiol / 2,3-dimercapto-1-propanesulfonic acid) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What is dmps (unithiol / 2,3-dimercapto-1-propanesulfonic acid)?

The IUPAC name is 4-hydroxypentan-2-one.

Also known as: 4-Hydroxypentan-2-one, 4-HYDROXY-2-PENTANONE, EINECS 224-003-3, DTXSID70864393.

IUPAC name
4-hydroxypentan-2-one
CAS number
4076-02-2
Molecular formula
C5H10O2
Molecular weight
102.13 g/mol
SMILES
CC(CC(=O)C)O
PubChem CID
20112

Risk for babies

Moderate risk

Infants are more vulnerable to DMPS (Unithiol / 2,3-dimercapto-1-propanesulfonic acid) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Regulatory consensus

3 regulatory and scientific bodies have classified DMPS (Unithiol / 2,3-dimercapto-1-propanesulfonic acid). The classifications differ — that's the data.

AgencyYearClassificationNotes
FDA—Not FDA-approved; available as compounded drug
BfArM—Approved pharmaceutical in Germany (Dimaval)
WHO—Essential Medicine — heavy metal poisoning

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where kids encounter dmps (unithiol / 2,3-dimercapto-1-propanesulfonic acid)

  • Pharmaceutical — mercury chelation therapy, arsenic poisoning treatment
  • Medical Diagnostics — DMPS challenge/provocation test for mercury body burden
  • Research — heavy metal toxicology research

Safer alternatives

Lower-risk approaches that achieve a similar outcome to DMPS (Unithiol / 2,3-dimercapto-1-propanesulfonic acid):

  • DMSA (Succimer)
    Trade-offs: Removes 95-99% of dissolved contaminants including metals, PFAS, nitrates; wastes 2-4 gallons per gallon produced (improving with newer systems); removes beneficial minerals; $0.05-0.25/gallon; requires pre-treatment for longevity.
  • BAL (British Anti-Lewisite)
    Trade-offs: Zero point-of-use emissions; shifts emissions to power generation (grid-dependent); lower operating cost; higher capital cost; infrastructure requirements (charging, grid capacity); rapidly improving economics.

Frequently asked questions

Is dmps (unithiol / 2,3-dimercapto-1-propanesulfonic acid) safe for kids?

Infants are more vulnerable to DMPS (Unithiol / 2,3-dimercapto-1-propanesulfonic acid) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What products contain dmps (unithiol / 2,3-dimercapto-1-propanesulfonic acid)?

DMPS (Unithiol / 2,3-dimercapto-1-propanesulfonic acid) appears in: mercury chelation therapy (pharmaceutical); arsenic poisoning treatment (pharmaceutical); DMPS challenge/provocation test for mercury body burden (medical diagnostics); heavy metal toxicology research (research).

What should I do if my child is exposed to dmps (unithiol / 2,3-dimercapto-1-propanesulfonic acid)?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Why do regulators disagree about dmps (unithiol / 2,3-dimercapto-1-propanesulfonic acid)?

DMPS (Unithiol / 2,3-dimercapto-1-propanesulfonic acid) has been classified by 3 agencies including FDA, BfArM, WHO, with differing conclusions. Regulators apply different standards of evidence (animal data weighting, exposure-pattern assumptions, epidemiological power thresholds), which is why two scientific bodies can review the same data and reach different conclusions. See the regulatory consensus table on this page for the full picture.

See DMPS (Unithiol / 2,3-dimercapto-1-propanesulfonic acid) in the baby app

Look up products containing dmps (unithiol / 2,3-dimercapto-1-propanesulfonic acid), compare to alternatives, and explore the full data record.

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Sources (1)
  1. — expert_curation

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →