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5a-androstane

Also known as: (5R,8S,9S,10S,13S,14S)-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene, (5a)-Androstane, (5α)-Androstane, 5-A-ANDROSTANE, 5-ALPHA-ANDROSTANE, 5-ALPHA-ANDROSTANE, 1X1ML, CH2CL2, 2000U G/ML, 5-α-androstane solution, 5ALPHA(H)-ANDROSTANE, 5ALPHA-ANDROSTAN, 5alpha-Androstane, 5alpha-androsane, 5α,14α-Androstane, 5α-Androstan, 5α-androstane, Aetioallocholan, Aetioallocholane, Androstane, Androstane, (5α)-, EINECS 207-116-2, Etioallocholane

5a-androstane (CAS 438-22-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C19H32 and a molecular weight of 260.457 g/mol. Key properties include a melting point of 78-82 °C(lit.), a boiling point of 336.0±9.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 145.9±12.3 °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.
438-22-2
Jingsj CID
J-999018-6
Molecular Formula
C19H32
Molecular Weight
260.457 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026
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Physicochemical Properties

Melting Point78-82 °C(lit.)
Boiling Point336.0±9.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point145.9±12.3 °C
Exact Mass260.250397
LogP8.42
Vapor Pressure0.0±0.3 mmHg at 25°C
Refractive Index1.508

GHS Safety & Compliance

Irritant / Health HazardSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation
  • H336 — May cause drowsiness or dizziness
  • H351 — Suspected of causing cancer
  • H373 — May cause damage to organs through prolonged exposure

Frequently Asked Questions

What is the CAS number of 5a-androstane?

The CAS number of 5a-androstane is 438-22-2.

What are the molecular formula and molecular weight of 5a-androstane?

5a-androstane has molecular formula C19H32 and molecular weight 260.457 g/mol.

Is 5a-androstane hazardous?

5a-androstane 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 5a-androstane?

For 5a-androstane, Upstream Products: 5α-Androstanedione, Dehydroepiandrosterone, acetic 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. "5a-androstane (CAS 438-22-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-999018-6 (accessed 2026-11-06).

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