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ID CAS Name Synonyms Molecular Formula Category
128755-65-9FuranolFuranolC4H4O2
2674-82-8diketeneDK
Diketen
diketen
diketene
Ketene Dimer
Acetyl ketene
ethenone,dimer
Ethenone, dimer
But-3-en-3-olide
diketene,inhibited
but-1-ene-1,3-dione
3-buteno-beta-lactone
4-methylene-2-oxetanon
4-Methylene-2-oxetanone
4-methylideneoxetan-2-one
3-hydroxy-3-butenoicacibeta-lactone
3-Butenoic acid, 3-hydroxy-, beta-lactone
C4H4O2Ketones;Organic materials;Aromatic amine products;Pharmaceutical Intermediates
322125-63-92-Furanol2-FuranolC4H4O2
4290-67-51,4-dioxin1,4-dioxinC4H4O2
51,4-dioxine1,4-dioxineC4H4O2
62345-51-93-butynoic acidCHequivCCH2COOH
3-Bytynoic Acid
3-butynoic acid
But-3-ynoic acid
but-3-ynoic acid
Ethynylacetic acid
2-Ethynylacetic acid
C4H4O2Organic acids;Organic materials
7METHYL PROPIOLATMETHYL PROPIOLATC4H4O2
8922-67-8Methyl propiolateMethyl propiolate
METHYL PROPYNOATE
METHYL PROPIOLATE
methyl prop-2-ynoate
Methyl acetylenecarboxylate
PROPIOLIC ACID METHYL ESTER
METHYL ACETYLENECARBOXYLATE
Propiolic acid methyl ester
PROPYNOIC ACID, METHYL ESTER
PROPARGYLIC ACID METHYL ESTER
acetylenecarboxylicacidmethylester
Acetylenecarboxylic acid methyl ester
Methyl propiolate, (Propiolic acid methyl ester)
C4H4O2Esters;Pyridines;Aliphatics;Acetylenes;Miscellaneous;Organic materials;Organic acid esters;pharmaceutical raw material;Acetylenic Carboxylic Acids & Their Derivatives
93675-13-62-BUTENEDIAL, (Z)-2-BUTENEDIAL, (Z)-
(2Z)-2-Butenedial DISCONTINUED.
C4H4O2
101375453-30-7But-2-ynoic-d3 acidBut-2-ynoic-d3 acidC4H4O2
11497-23-4gamma-crotonolactone5H-Furan-2-one
2(5H)-Furanone
furan-2(5H)-one
2-(5H)-furanone
g-Crotonolactone
a,b-Crotonolactone
2,5-Dihydrofuranone
gamma-crotonolactone
2,5-Dihydrofuran-2-one
Crotonic acid, 4-hydroxy-
.alpha.,.beta.-Crotonolactone
5-Oxo-2,5-dihydrofuran-3-yl ester
γ-Crotonolactone, 2-Buten-1,4-olide
2-Buten-1,4-olide~gamma-Crotonolactone
2(5H)-Furanone,γ-Crotonolactone, 2-Buten-1,4-olide
C4H4O2None;Furans;C4 to C7;Antibiotic;Heterocycles;Building Blocks;Chemical Synthesis;Heterocyclic Building Blocks
1215506-53-3cyclobutane-1,3-dione1,3-Cyclobutanedione
cyclobutane-1,3-dione
C4H4O2
13Cyclobutane-1,3-dione.Cyclobutane-1,3-dione.C4H4O2
144-HYDROXYCROTONOLACTONE4-HYDROXYCROTONOLACTONEC4H4O2
1588996-98-92H-Oxet-2-one, 4-methyl-2H-Oxet-2-one, 4-methyl-C4H4O2
164-methylideneoxetan-2-one4-methylideneoxetan-2-oneC4H4O2
17Alkenyl monocarboxylic acidAlkenyl monocarboxylic acidC4H4O2
18Formic acid 2-propynyl esterFormic acid 2-propynyl esterC4H4O2
1978675-98-62-Cyclobuten-1-one, 3-hydroxy-2-Cyclobuten-1-one, 3-hydroxy-C4H4O2
2068498-71-51,3-Dioxetane, 2,4-bis(methylene)-1,3-Dioxetane, 2,4-bis(methylene)-C4H4O2
21DIKETENE: 50% IN METHYLENE CHLORIDEDIKETENE: 50% IN METHYLENE CHLORIDEC4H4O2
2220825-71-23-Butenoic acid, 4-hydroxy-, gamma-lactoneFuran-2(3H)-one
but-3-en-4-olide
2,3-Dihydrofuran-2-one
3-Butenoic acid, 4-hydroxy-, gamma-lactone
C4H4O2
23DIOXIN-LIKE PCB RH12 CALIBRATION SOLUTION CS1DIOXIN-LIKE PCB RH12 CALIBRATION SOLUTION CS1C4H4O2
24DIOXIN-LIKE PCB RH12 CALIBRATION SOLUTION CS3HDIOXIN-LIKE PCB RH12 CALIBRATION SOLUTION CS3HC4H4O2

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