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Prednisone

Also known as: 1,2-Dehydrocortisone, 1,4-Pregnadiene-17α,21-diol-3,11,20-trione, 17α,21-Dihydroxypregna-1,4-diene-3,11,20-trione, Deltacortisone, Deltisone, Δ1-Cortisone, Δ1-Dehydrocortisone

Prednisone (CAS 53-03-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C21H26O5 and a molecular weight of 358.428 g/mol. Key properties include a melting point of 236-238 °C(lit.), a boiling point of 573.7±50.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 314.8±26.6 °C. It is classified under GHS with signal word Warning and hazard statements H361 — Suspected of damaging fertility or the unborn child. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
53-03-2
Jingsj CID
J-44429-1
Molecular Formula
C21H26O5
Molecular Weight
358.428 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point236-238 °C(lit.)
Boiling Point573.7±50.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point314.8±26.6 °C
Exact Mass358.178009
PSA91.67000
LogP1.57
Vapor Pressure0.0±3.6 mmHg at 25°C
Refractive Index1.604

GHS Safety & Compliance

Health HazardSignal word: Warning
  • H361 — Suspected of damaging fertility or the unborn child

Activity & Biological Data

Additional Information[1]. RIEMER AD. Application of the newer corticosteroids to augment diuresis in congestive heart failure. Am J Cardiol. 1958 Apr;1(4):488-96. [2]. Zhang H, et al. Prednisone adding to usual care treatment for refractory decompensated congestive heart failure. Int Heart J. 2008 Sep;49(5):587-95.

Customs & Trade Information

HS Code2937210000

Frequently Asked Questions

What is the CAS number of Prednisone?

The CAS number of Prednisone is 53-03-2.

What are the molecular formula and molecular weight of Prednisone?

Prednisone has molecular formula C21H26O5 and molecular weight 358.428 g/mol.

Is Prednisone hazardous?

Prednisone has GHS signal word Warning and hazard statements H361 — Suspected of damaging fertility or the unborn child.

What are the upstream and downstream products of Prednisone?

For Prednisone, Upstream Products: Prednisone 21-acetate, Prednisolone Acetate, Cortisone; Downstream Products: Prednisone 21-acetate.

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

Last updated:

How to cite: Jingsj. "Prednisone (CAS 53-03-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44429-1 (accessed 2026-11-09).

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