Internal Alkynes

Alkynes substituted at both carbons. The triple bond is carried through a sequence rather than functionalised at a terminal C-H, which makes the substitution pattern the property that matters: it sets the geometry of the chain and controls what partial hydrogenation or cycloaddition will do. Several entries in this group also carry a heteroatom substituent – an ether, a chloride, an ester – so the alkyne can be addressed after that group has been used.

28 catalogue entries group internal-alkynes Typical use: Hydrogenation · Metathesis · Cycloaddition

CAS	Compound	Formula	MW	Packing	Quote
1073132-25-8	(5Z)-5-Tetradecen-1-yne	C₁₄H₂₄	192.34	1kg / 25kg / 50kg	Request
62992-46-5	2-(Pent-4-yn-1-yloxy)tetrahydro-2H-pyran	C₁₀H₁₆O₂	168.23	1kg / 25kg / 100kg	Request
7218-43-1	2-[2-(Prop-2-ynyloxy)ethoxy]ethan-1-ol	C₇H₁₂O₃	144.17	1kg / 25kg / 100kg	Request
1719-19-3	2-Methyl-4-phenyl-3-butyn-2-ol	C₁₁H₁₂O	160.21	1kg / 25kg / 100kg	Request
2028-63-9	3-Butyn-2-ol	C₄H₆O	70.09	1kg / 25kg / 100kg	Request
1423-60-5	3-Butyn-2-one	C₄H₄O	68.07	1kg / 25kg / 100kg	Request
40365-61-5	3-Butynyl tetrahydro-2H-pyran-2-yl ether	C₉H₁₄O₂	154.21	1kg / 25kg / 100kg	Request
3355-31-5	3-Chloro-1-phenyl-1-propyne	C₉H₇Cl	150.60	1kg / 25kg / 100kg	Request
628-33-1	3-Ethoxyprop-1-yne	C₅H₈O	84.12	1kg / 25kg / 100kg	Request
85655-98-7	3-Hexyne-1,6-diol	C₆H₁₀O₂	114.14	1kg / 25kg / 100kg	Request
38771-21-0	4-Bromobut-1-yne	C₄H₅Br	132.99	1kg / 25kg / 100kg	Request
100144-29-4	4-Cyclopentylbut-3-yn-2-ol	C₉H₁₄O	138.21	1kg / 25kg / 100kg	Request
14267-92-6	5-Chloro-1-pentyne	C₅H₇Cl	102.56	1kg / 25kg / 100kg	Request
14918-21-9	5-Cyano-1-pentyne	C₆H₇N	93.13	1kg / 25kg / 100kg	Request
15252-45-6	5-Hexyn-1-amine	C₆H₁₁N	97.16	1kg / 25kg / 100kg	Request
21233-94-3	5-Hexynamide	C₆H₉NO	111.14	1kg / 25kg / 100kg	Request
88211-50-1	But-3-yn-1-amine hydrochloride	C₄H₈ClN	105.56	1kg / 25kg / 100kg	Request
1942058-91-4	Carbamic acid, N-3-butyn-1-yl-, 9H-fluoren-9-ylmethyl ester	C₁₉H₁₇NO₂	291.3	1kg / 25kg / 100kg	Request
55314-57-3	Ethyl 2-pentynoate	C₇H₁₀O₂	126.15	1kg / 25kg / 100kg	Request
79424-03-6	Ethyl 4,4-dimethylpent-2-ynoate	C₆H₅F₃O₂	166.10	1kg / 25kg / 100kg	Request
105339-02-4	Ethyl hept-6-ynoate	C₉H₁₄O₂	154.21	1kg / 25kg / 100kg	Request
63093-41-4	Ethyl pent-4-ynoate	C₇H₁₀O₂	126.15	1kg / 25kg / 100kg	Request
23326-27-4	Methyl 2-butynoate	C₅H₆O₂	98.10	1kg / 25kg / 100kg	Request
627-41-8	Methyl 2-Propynyl Ether	C₄H₆O	70.09	1kg / 25kg / 100kg	Request
77758-51-1	Methyl 5-hexynoate	C₇H₁₀O₂	126.15	1kg / 25kg / 100kg	Request
2117-11-5	Pent-4-yn-2-ol	C₅H₈O	84.12	1kg / 25kg / 100kg	Request
73448-14-3	Tert-butyl hex-5-ynoate	C₁₀H₁₆O₂	168.23	1kg / 25kg / 100kg	Request
151978-50-6	tert-Butyl N-(pent-4-yn-1-yl)carbamate	C₁₀H₁₇NO₂	183.25	1kg / 25kg / 100kg	Request

Entries are listed alphabetically. Packing is the standard unit weight; other quantities are quoted per lot.

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