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5-Aminolevulinic acid hydrochloride

Also known as: 5-Amino-4-oxopentanoic acid hydrochloride, delta-Aminolevulinic acid hydrochloride, 5-ALA hydrochloride, 5-Aminolevulinic acid HCl, 5-Amino-3-oxopentanoic acid hydrochloride

5-Aminolevulinic acid hydrochloride (CAS 5451-09-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H10ClNO3 and a molecular weight of 167.59 g/mol. Key properties include a melting point of ~150 °C (dec.), a boiling point of 311.5±27.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 142.2±23.7 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5451-09-2
Jingsj CID
J-33137-3
Molecular Formula
C5H10ClNO3
Molecular Weight
167.59 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point~150 °C (dec.)
Boiling Point311.5±27.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point142.2±23.7 °C
PSA80.39000
LogP-0.79
Appearancepowder
Vapor Pressure0.0±1.4 mmHg at 25°C
Refractive Index1.482
Additional PropertyH2O: 50 mg/mL

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation

Activity & Biological Data

Additional Information[1]. Stummer, W., et al., Fluorescence-guided surgery with 5-aminolevulinic acid for resection of malignant glioma: a randomised controlled multicentre phase III trial. Lancet Oncol, 2006. 7(5): p. 392-401. [2]. Eyupoglu, I.Y., et al., Improving the extent of malignant glioma resection by dual intraoperative visualization approach. PLoS One, 2012. 7(9): p. e44885.

Customs & Trade Information

HS Code2922509090
Summary2922509090. other amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 5-Aminolevulinic acid hydrochloride?

The CAS number of 5-Aminolevulinic acid hydrochloride is 5451-09-2.

What are the molecular formula and molecular weight of 5-Aminolevulinic acid hydrochloride?

5-Aminolevulinic acid hydrochloride has molecular formula C5H10ClNO3 and molecular weight 167.59 g/mol.

Is 5-Aminolevulinic acid hydrochloride hazardous?

5-Aminolevulinic acid hydrochloride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of 5-Aminolevulinic acid hydrochloride?

For 5-Aminolevulinic acid hydrochloride, Upstream Products: Methyl 5-acetamido-4-oxopentanoate, 2(1H)-Pyridone; Downstream Products: Porphobilinogen, Methyl aminolevulinate hydrochloride, 5-Aminolevulinic acid.

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

Last updated:

How to cite: Jingsj. "5-Aminolevulinic acid hydrochloride (CAS 5451-09-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33137-3 (accessed 2026-11-09).

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