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2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one

Also known as: 2-n-Butyl-1,3-diaza-spiro[4.4]non-1-en-4-one, 1,3-Diazaspiro[4.4]non-1-en-4-one, 2-butyl-, 2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one (base)

2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one (CAS 138402-05-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C11H18N2O and a molecular weight of 194.27800 g/mol. Key properties include a boiling point of 294.7±23.0°C at 760 mmHg and a density of 1.186g/cm3. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
138402-05-8
Jingsj CID
J-1176231-5
Molecular Formula
C11H18N2O
Molecular Weight
194.27800 g/mol
Category
Ketones
Last updated
11/2/2026

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Physicochemical Properties

Boiling Point294.7±23.0°C at 760 mmHg
Density1.186g/cm3
Exact Mass230.118591
PSA41.46000
LogP1.78210
Refractive Index1.592

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one?

The CAS number of 2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one is 138402-05-8.

What are the molecular formula and molecular weight of 2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one?

2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one has molecular formula C11H18N2O and molecular weight 194.27800 g/mol.

What are the upstream and downstream products of 2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one?

For 2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one, Upstream Products: ethyl 1-aminocyclopentane-1-carboxylate, 1-aminocyclopentane-1-carboxamide, Valeryl chloride; Downstream Products: Irbesartan, 4'-[(2-Butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl]-[1,1'-biphenyl]-2-carbonitrile.

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

Last updated:

How to cite: Jingsj. "2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one (CAS 138402-05-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1176231-5 (accessed 2026-11-09).

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