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3-Guanidinopropionic acid

Also known as: 3-Guanidinopropanoic acid, beta-Guanidinopropionic acid, Guanidinopropionic acid, 3-(diaminomethylideneamino)propanoic acid, 3-carbamimidamidopropanoic acid, N-(aminoiminomethyl)-beta-alanine, N-Carbamimidoyl-β-alanine, MFCD00045939, EINECS 206-530-0, Ompenaclid, RGX-202

3-Guanidinopropionic acid (CAS 353-09-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H9N3O2 and a molecular weight of 131.133 g/mol. Key properties include a melting point of 222 °C (dec.)(lit.), a boiling point of 299.1±42.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 134.7±27.9 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
353-09-3
Jingsj CID
J-1072694-0
Molecular Formula
C4H9N3O2
Molecular Weight
131.133 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point222 °C (dec.)(lit.)
Boiling Point299.1±42.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point134.7±27.9 °C
Exact Mass131.069473
PSA99.20000
LogP-1.68
Vapor Pressure0.0±1.3 mmHg at 25°C
Refractive Index1.575
Storage Conditions−20°C

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Activity & Biological Data

TargetHuman Endogenous Metabolite
Additional Information[1]. Kurth I, et al. Therapeutic targeting of SLC6A8 creatine transporter suppresses colon cancer progression and modulates human creatine levels. Sci Adv. 2021 Oct 8;7(41):eabi7511.

Customs & Trade Information

HS Code2925290090
Summary2925290090 other imines and their derivatives; salts thereof。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3-Guanidinopropionic acid?

The CAS number of 3-Guanidinopropionic acid is 353-09-3.

What are the molecular formula and molecular weight of 3-Guanidinopropionic acid?

3-Guanidinopropionic acid has molecular formula C4H9N3O2 and molecular weight 131.133 g/mol.

Is 3-Guanidinopropionic acid hazardous?

3-Guanidinopropionic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 3-Guanidinopropionic acid?

For 3-Guanidinopropionic acid, Upstream Products: beta-Alanine, Thiourea dioxide, S-Methylisothiourea hemisulfate.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "3-Guanidinopropionic acid (CAS 353-09-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1072694-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.