Ethyl 4-cyclopentyl-2,4-dioxobutanoate

CAS 1033443-97-8 C₁₁H₁₆O₄ 212.24 g/mol Catalogue item Acids, Esters & Lactones

Structure of Ethyl 4-cyclopentyl-2,4-dioxobutanoate, CAS 1033443-97-8 — Structure · C11H16O4

CAS number: 1033443-97-8
Molecular formula: C₁₁H₁₆O₄
Molecular weight: 212.24 g/mol
Standard packing: 1kg / 25kg / 100kg

CAS 1033443-97-8, Ethyl 4-cyclopentyl-2,4-dioxobutanoate, is a C11H16O4 ester – the protected form of the corresponding acid.

The ester is the protected form of the acid: it survives steps the free acid would not, and is cleaved when the acid is wanted. The ring constrains the geometry of the fragment, so the entry is bought for the shape it imposes on the rest of the molecule rather than for a single reactive site.

The formula C11H16O4 resolves to 11 carbons with 4 oxygens. A 11-carbon chain sits between volatility and lipophilicity, which is the range most often used when a fragment has to stay in the organic phase without being waxy.

Handling and storage

Esters hydrolyse slowly in the presence of moisture, so the lot is stored dry and away from bases.

Ordering

The unit weights held are 1kg / 25kg / 100kg. A split shipment across two of those sizes is treated as one lot and one certificate. Identity is confirmed by NMR and MS at release, and the assay value belongs to the lot rather than to the catalogue entry.

Other acids, esters & lactones entries

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CAS	Compound	Formula	MW	Packing	Quote
42516-28-9	(E)-Ethyl 4-(diethoxyphosphoryl)but-2-enoate	C₁₀H₁₉O₅P	250.23	1kg / 25kg / 100kg	Request
14113-05-4	10-Hydroxy-2-decenoic acid	C₁₀H₁₈O₃	186.25	1kg / 25kg / 100kg	Request
83905-98-0	11-Hydroxyundecylphosphonic acid	C₁₁H₂₅O₄P	252.29	1kg / 25kg / 100kg	Request
109-29-5	16-Hexadecanolide	C₁₆H₃₀O₂	254.41	1kg / 25kg / 100kg	Request
506-13-8	16-Hydroxyhexadecanoic acid	C₁₆H₃₂O₃	272.42	1kg / 25kg / 100kg	Request
10154-71-9	3-(Phenylsulfonyl)propionic acid	C₉H₁₀O₄S	214.24	1kg / 25kg / 100kg	Request
1577-22-6	5-Hexenoic acid	C₆H₁₀O₂	114.14	1kg / 25kg / 100kg	Request
59320-77-3	8-Methylnon-6-enoic acid	C₁₀H₁₈O₂	170.25	1kg / 25kg / 100kg	Request

Specification

CAS	1033443-97-8
Formula	C₁₁H₁₆O₄
Molecular weight	212.24 g/mol
Packing	1kg / 25kg / 100kg
Assay	lot specific, on COA
Appearance	see COA
Storage	cool, dry, inert

Ordering

Catalogue items ship from stock or are made to order, whichever the lot status requires. A gram-scale sample is available before a kilo lot is committed.

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Supplied for laboratory and industrial use. Not for drug, cosmetic or household use.

Quotation

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Entry	Ethyl 4-cyclopentyl-2,4-dioxobutanoate
CAS	1033443-97-8
Typical lead time	Stock or 2–4 weeks
Documentation	COA, SDS, spec sheet

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