| Chemical formula |
Synonyms |
CAS number |
| C4Br2 |
dibromobutadiyne |
36333-41-2 |
| C4Ce |
cerium tetracarbide |
12151-79-0 |
| C4ClF7O |
heptafluorobutyryl chloride |
375-16-6 |
| C4Cl2F4O2 |
tetrafluorosuccinyl chloride |
356-15-0 |
| C4Cl2F4O3 |
chlorodifluoroacetic anhydride |
2834-23-3 |
| C4Cl2O4Rh2 |
dirhodium tetracarbonyl dichloride |
14523-22-9 |
| C4Cl3CoO4Si |
trichlorosilylcobalt tetracarbonyl |
14239-21-5 |
| C4Cl4O |
perchlorocyclobutenone |
3200-96-2 |
| C4CoF3O4Si |
trifluorosilylcobalt tetracarbonyl |
15693-79-5 |
| C4Dy |
dysprosium tetracarbide |
12543-88-3 |
| C4F4O3 |
tetrafluorosuccinic anhydride |
699-30-9 |
| C4F6O |
hexafluorocyclobutanone |
699-35-4 |
| C4F8 |
octafluorocyclobutane |
115-25-3 |
| C4F10O2S |
nonafluorobutanesulfonyl fluoride |
375-72-4 |
| C4FeI2O4 |
iron tetracarbonyl diiodide |
14911-55-8 |
| C4FeO4 |
iron tetracarbonyl |
15281-98-8 |
| C4H2Br2O3 |
mucobromic acid |
488-11-9 |
| C4H2Br2O3 |
mucobromic acid lactone |
766-38-1 |
| C4H2Cl2O2 |
fumaryl chloride |
627-63-4 |
| C4H2Cl2O3 |
mucochloric acid |
87-56-9 |
| C4H2Cl4O3 |
dichloroacetic anhydride |
4124-30-5 |
| C4H2F4O4 |
tetrafluorosuccinic acid |
377-38-8 |
| C4H2N2 |
fumaronitrile |
764-42-1 |
| C4H2N2O4 |
alloxan |
50-71-5 |
| C4H3BrS |
2-bromothiophene |
1003-09-4 |
| C4H3ClN2 |
chloropyrazine |
14508-49-7 |
| C4H3Cl3OS |
methyl trichlorothioacrylate |
76619-91-5 |
| C4H3Cu |
copper vinylacetylenide |
5256-77-9 |
| C4H3F3O2 |
vinyl trifluoroacetate |
433-28-3 |
| C4H3F5O2 |
pentafluoropropanoic acid methyl ester |
378-75-6 |
| C4H3F7O |
heptafluoropropyl methyl ether |
375-03-1 |
| C4H3F7O |
methyl perfluoroisopropyl ether |
22052-84-2 |
| C4H3F7O |
sevoflurane |
28523-86-6 |
| C4H3N |
cyanoallene |
1001-56-5 |
| C4H3N3O4 |
violuric acid |
87-39-8 |
| C4H4 |
cyclobutadiene |
1120-53-2 |
| C4H4 |
methylenecyclopropene |
4095-06-1 |
| C4H4AsCl3 |
lewisite 2 |
40334-69-8 |
| C4H4Cl2O2 |
butanedioyl dichloride |
543-20-4 |
| C4H4Cl2O2 |
vinyl dichloro acetate |
7561-04-8 |
| C4H4N2 |
pyrazine |
290-37-9 |
| C4H4N2 |
pyridazine |
289-80-5 |
| C4H4N2 |
succinonitrile |
110-61-2 |
| C4H4N2O2 |
acetylenedicarboxamide |
543-21-5 |
| C4H4N2O2 |
maleic hydrazide |
123-33-1 |
| C4H4N2O2 |
uracil |
66-22-8 |
| C4H4N2O2S |
sulfonyl diacetonitrile |
37463-94-8 |
| C4H4N2O3 |
barbituric acid |
67-52-7 |
| C4H4N2O3 |
barbituric acid |
32267-40-6 |
| C4H4N2O5 |
alloxan |
3237-50-1 |
| C4H4N2S2 |
dithiouracil |
2001-93-6 |
| C4H4N2S2 |
ethylene dithiocyanate |
629-17-4 |
| C4H4Na2O4 |
sodium succinate |
150-90-3 |
| C4H4O |
furan |
110-00-9 |
| C4H4O3S |
thiodiglycolic anhydride |
3261-87-8 |
| C4H4O4 |
ethylene oxalate |
3524-70-7 |
| C4H4O4 |
fumaric acid |
110-17-8 |
| C4H4O5 |
oxalacetic acid |
328-42-7 |
| C4H4S |
thiophene |
110-02-1 |
| C4H4S2 |
2-thiophenethiol |
7774-74-5 |
| C4H4S2 |
3-thiophenethiol |
7774-73-4 |
| C4H4Se |
selenophene |
288-05-1 |
| C4H4Te |
tellurophene |
288-08-4 |
| C4H5BrF2O2 |
ethyl bromodifluoroacetate |
667-27-6 |
| C4H5ClO |
cyclopropanecarboxylic acid chloride |
4023-34-1 |
| C4H5ClO |
methacryloyl chloride |
920-46-7 |
| C4H5ClO3 |
methyl malonyl chloride |
37517-81-0 |
| C4H5F5O |
ethyl pentafluoroethyl ether |
22052-81-9 |
| C4H5N |
allyl isocyanide |
2835-21-4 |
| C4H5N |
cyclopropanecarbonitrile |
5500-21-0 |
| C4H5N |
pyrrole |
109-97-7 |
| C4H5NO2S |
ethoxycarbonyl isothiocyanate |
16182-04-0 |
| C4H5NO3 |
maleamic acid |
557-24-4 |
| C4H5NS |
allyl isothiocyanate |
57-06-7 |
| C4H5N3 |
aminopyrazine |
5049-61-6 |
| C4H5N3O3 |
uramil |
118-78-5 |
| C4H6 |
cyclobutene |
822-35-5 |
| C4H6 |
methylenecyclopropane |
6142-73-0 |
| C4H6Br2O2 |
ethyl dibromoacetate |
617-33-4 |
| C4H6MgO4 |
magnesium acetate |
142-72-3 |
| C4H6N2O2 |
dihydrouracil |
504-07-4 |
| C4H6N2O2 |
dimethylfurazan monoxide |
2518-42-5 |
| C4H6N2O2 |
ethyl diazoacetate |
623-73-4 |
| C4H6N2S |
methimazole |
60-56-0 |
| C4H6N4O2 |
glycoluril |
496-46-8 |
| C4H6N4O12 |
erythrityl tetranitrate |
142435-64-1 |
| C4H6O |
crotonaldehyde |
123-73-9 |
| C4H6O |
cyclobutanone |
1191-95-3 |
| C4H6O |
cyclopropanecarboxaldehyde |
1489-69-6 |
| C4H6O |
ethoxyacetylene |
927-80-0 |
| C4H6O |
ethylketene |
20334-52-5 |
| C4H6O |
methyl propargyl ether |
627-41-8 |
| C4H6O |
methyl vinyl ketone |
78-94-4 |
| C4H6O |
vinyl ether |
109-93-3 |
| C4H6OS |
vinyl sulfoxide |
1115-15-7 |
| C4H6O2 |
acetic acid ethenyl ester |
108-05-4 |
| C4H6O2 |
crotonic acid |
107-93-7 |
| C4H6O2 |
crotonic acid |
3724-65-0 |
| C4H6O2 |
cyclopropanecarboxylic acid |
1759-53-1 |
| C4H6O2 |
isocrotonic acid |
503-64-0 |
| C4H6O2S |
diacetyl sulfide |
3232-39-1 |
| C4H6O2S |
divinyl sulfone |
77-77-0 |
| C4H6O3 |
acetic acid anhydride |
108-24-7 |
| C4H6O3 |
propylene carbonate |
108-32-7 |
| C4H6O4 |
butanedioic acid |
110-15-6 |
| C4H6O4 |
diacetyl peroxide |
110-22-5 |
| C4H6O4 |
methylmalonic acid |
516-05-2 |
| C4H6O4Zn |
zinc acetate |
557-34-6 |
| C4H6O5 |
diglycolic acid |
110-99-6 |
| C4H6O5 |
hydroxybutanedioic acid |
6915-15-7 |
| C4H6O5 |
methyltartronic acid |
595-98-2 |
| C4H6O6 |
meso tataric acid |
147-73-9 |
| C4H6O6 |
tartaric acid |
133-37-9 |
| C4H6S |
divinyl sulfide |
627-51-0 |
| C4H6S |
2,3-dihydrothiophene |
1120-59-8 |
| C4H6S4 |
dimethyl tetrathiooxalate |
61485-47-0 |
| C4H7 |
cyclobutyl radical |
4548-06-5 |
| C4H7AlO5 |
aluminum diacetate |
142-03-0 |
| C4H7Br |
cyclobutyl bromide |
4399-47-7 |
| C4H7BrO |
isobutyryl bromide |
2736-37-0 |
| C4H7ClO |
butanoyl chloride |
141-75-3 |
| C4H7ClO2 |
ethoxyacetyl chloride |
500025-15-0 |
| C4H7ClO2 |
ethyl chloroacetate |
105-39-5 |
| C4H7CsO2 |
caesium butyrate |
38869-25-9 |
| C4H7FO2 |
isopropyl fluoromethanoate |
500023-95-0 |
| C4H7F4N |
tetrafluorodiethylamine |
462-89-5 |
| C4H7IO2 |
ethyl iodoacetate |
623-48-3 |
| C4H7KO2 |
potassium butyrate |
589-39-9 |
| C4H7LiO2 |
lithium butyrate |
21303-03-7 |
| C4H7N |
butanenitrile |
109-74-0 |
| C4H7NO |
cyclopropanecarboxamide |
6228-73-5 |
| C4H7NO |
ethoxyacetonitrile |
62957-60-2 |
| C4H7NO |
methacrylamide |
79-39-0 |
| C4H7NO2 |
acetoacetamide |
5977-14-0 |
| C4H7NO3 |
ethyl oxamate |
617-36-7 |
| C4H7NO4 |
aspartic acid |
56-84-8 |
| C4H7NS |
isopropyl isothiocyanate |
2253-73-8 |
| C4H7N3O |
creatinine |
60-27-5 |
| C4H7NaO2 |
sodium butyrate |
156-54-7 |
| C4H7O2Rb |
rubidium butyrate |
38869-23-7 |
| C4H7O2Tl |
thallium butyrate |
63424-49-7 |
| C4H8 |
cyclobutane |
287-23-0 |
| C4H8 |
methylcyclopropane |
594-11-6 |
| C4H8Cl2Si |
ethylvinyldichlorosilane |
10138-21-3 |
| C4H8Cl3O4P |
metrifonate |
52-68-6 |
| C4H8N2 |
lysidine |
534-26-9 |
| C4H8N2O2 |
butanediamide |
110-14-5 |
| C4H8N2O3 |
ethyl allophanate |
626-36-8 |
| C4H8N2O4S2 |
dithiodiglycolicdihydroxamic acid |
764-29-4 |
| C4H8N2S |
allylthiourea |
109-57-9 |
| C4H8O |
butanal |
123-72-8 |
| C4H8O |
cyclobutanol |
2919-23-5 |
| C4H8O |
cyclopropyl carbinol |
2516-33-8 |
| C4H8O |
cyclopropyl methyl ether |
540-47-6 |
| C4H8O2 |
butanoic acid |
107-92-6 |
| C4H8O2 |
ethyl acetate |
141-78-6 |
| C4H8O2 |
ethylene glycol monovinyl ether |
764-48-7 |
| C4H8O3 |
ethylene glycol monoacetate |
542-59-6 |
| C4H8O4 |
acetic acid dimer |
6993-75-5 |
| C4H8O4 |
1,3,5,7-tetroxane |
293-30-1 |
| C4H8S |
tetrahydrothiophene |
110-01-0 |
| C4H8S |
ethylvinyl sulfide |
627-50-9 |
| C4H8S3 |
allyl methyl trisulfide |
34135-85-8 |
| C4H9 |
isobutyl radical |
4630-45-9 |
| C4H9ClHg |
isobutylmercuric chloride |
27151-74-2 |
| C4H9ClSi |
vinyldimethylchlorosilane |
1719-58-0 |
| C4H9Cl2OP |
butylphosphonic dichloride |
2302-80-9 |
| C4H9Cl3Si |
isobutyltrichlorosilane |
18169-57-8 |
| C4H9F3O3SSi |
trimethylsilyl trifluoromethanesulfonate |
27607-77-8 |
| C4H9Li |
butyl lithium |
109-72-8 |
| C4H9N |
cyclobutylamine |
2516-34-9 |
| C4H9N |
pyrrolidine |
123-75-1 |
| C4H9NO |
butanamide |
541-35-5 |
| C4H9NO |
morpholine |
110-91-8 |
| C4H9NO2 |
methylalanine |
3913-67-5 |
| C4H9NO2 |
propylcarbamate |
627-12-3 |
| C4H9NO3 |
butyl nitrate |
928-45-0 |
| C4H9NO3 |
isobutyl nitrate |
543-29-3 |
| C4H9NO3 |
threonine |
72-19-5 |
| C4H9NO4 |
ammonium acid succinate |
38457-08-8 |
| C4H9NO6 |
ammonium acid tartrate |
3095-65-6 |
| C4H9NS |
dimethyl thioacetamide |
631-67-4 |
| C4H9NS |
thiomorpholine |
123-90-0 |
| C4H9NSSi |
trimethylsilyl isothiocyanate |
2290-65-5 |
| C4H10 |
butane |
106-97-8 |
| C4H10 |
isobutane |
75-28-5 |
| C4H10AlCl |
diethylaluminumchloride |
96-10-6 |
| C4H10BCl |
chlorodiethylborane |
5314-83-0 |
| C4H10BF3O |
boron trifluoride etherate |
109-63-7 |
| C4H10Be |
diethylberyllium |
542-63-2 |
| C4H10Cl2Si |
dichlorodiethylsilane |
1719-53-5 |
| C4H10Cl2Sn |
diethyl dichloro tin |
866-55-7 |
| C4H10FO2P |
ethyl ethylphosphonofluoridate |
650-20-4 |
| C4H10FO2P |
propyl methylphosphonofluoridate |
763-14-4 |
| C4H10FO2P |
sarin |
107-44-8 |
| C4H10F3NS |
diethylaminosulfur trifluoride |
38078-09-0 |
| C4H10NO3PS |
acephate |
30560-19-1 |
| C4H10N2 |
diethyldiazene |
821-14-7 |
| C4H10N2 |
piperazine |
110-85-0 |
| C4H10N2O |
butyric acid hydrazide |
3538-65-6 |
| C4H10N4O2 |
butanedioyl dihydrazide |
4146-43-4 |
| C4H10N4O2S |
mercaptosuccindihydrazide |
687-57-0 |
| C4H10N4O2S2 |
dithiodiglycolic acid dihydrazide |
6854-84-8 |
| C4H10N4S2 |
ethylenediamine dihydrothiocyanate |
22205-63-6 |
| C4H10O |
ethoxy ethane |
60-29-7 |
| C4H10O |
methyl propyl ether |
557-17-5 |
| C4H10OS |
diethyl sulfoxide |
70-29-1 |
| C4H10O2 |
trimethylene glycol monomethyl ether |
1589-49-7 |
| C4H10O2S |
diethyl sulfone |
597-35-3 |
| C4H10O2S |
thiodiglycol |
111-48-8 |
| C4H10O4S |
butyl sulfuric acid |
15507-13-8 |
| C4H10O6S3 |
trimethylsulfonylmethane |
67294-81-9 |
| C4H10S |
diethyl sulfide |
352-93-2 |
| C4H10S2 |
methyl isopropyl disulfide |
40136-65-0 |
| C4H10S3 |
methyl propyl trisulfide |
17619-36-2 |
| C4H10S4 |
diethyl tetrasulfide |
13730-34-2 |
| C4H10Se2 |
diethyl diselenide |
628-39-7 |
| C4H10Te2 |
diethylditelluride |
26105-63-5 |
| C4H10Zn |
diethylzinc |
557-20-0 |
| C4H11AsO2 |
diethylarsinic acid |
4964-27-6 |
| C4H11BO2 |
ethyldimethoxyborane |
7318-82-3 |
| C4H11ClSi |
diethyldichlorosilane |
1609-19-4 |
| C4H11NO2 |
aminoacetaldehyde dimethyl acetal |
22483-09-6 |
| C4H11NO2 |
diethanolamine |
111-42-2 |
| C4H11N3O7 |
diglycine nitrate |
6845-92-7 |
| C4H11O3P |
dimethyl ethylphosphonate |
6163-75-3 |
| C4H11O3P |
ethyl methyl methylphosphonate |
18755-36-7 |
| C4H12BrN |
tetramethylammonium bromide |
64-20-0 |
| C4H12CdCl3N |
tetramethylammonium trichlorocadmate |
15976-91-7 |
| C4H12CdSe |
dimethylcadmium·dimethylselenium |
143481-65-6 |
| C4H12ClN |
tetramethylammonium chloride |
75-57-0 |
| C4H12GeO4 |
tetramethoxygermanium |
992-91-6 |
| C4H12IN |
tetramethylammonium iodide |
75-58-1 |
| C4H12N2 |
tetramethylhydrazine |
6415-12-9 |
| C4H12N2O4 |
ammonium succinate |
2226-88-2 |
| C4H12N2O6 |
ammonium tartrate |
3164-29-2 |
| C4H12OSi |
ethyldimethylsilanol |
5906-73-0 |
| C4H12OSi |
trimethylsilylmethanol |
3219-63-4 |
| C4H12O4Si |
tetramethyl silicate |
681-84-5 |
| C4H12P2 |
tetramethylbiphosphine |
3676-91-3 |
| C4H12SSi |
trimethylsilyl methyl sulfide |
3908-55-2 |
| C4H12SZn |
dimethylzinc dimethylsulfide complex |
91071-61-3 |
| C4H12SeZn |
dimethylzinc dimethylselenium complex |
108430-95-1 |
| C4H12Si |
diethylsilane |
542-91-6 |
| C4H12TeZn |
dimethylzinc dimethyltellerium complex |
127283-03-8 |
| C4H13Cl2N |
tetramethylammonium hydrogen dichloride |
5906-64-9 |
| C4H13NSi |
trimethylsilylmethylamine |
18166-02-4 |
| C4H20I2N4Pt |
tetramethylammonium platinum iodide |
131145-80-7 |
| C4Ho |
holmium tetracarbide |
12144-72-8 |
| C4I4S |
tetraiodothiophene |
19259-11-1 |
| C4La |
lanthanum tetracarbide |
12603-31-5 |
| C4Lu |
lutetium tetracarbide |
37215-84-2 |
| C4N |
cyanopropynylidene |
129066-33-7 |
| C4N2O |
dicyanoketene |
4361-47-1 |
| C4N2S |
dicyanothioketene |
54856-36-9 |
| C4Nd |
neodymium tetracarbide |
12373-84-1 |
| C4NiO4 |
nickel tetracarbonyl |
13463-39-3 |
| C4Sc |
scandium tetracarbide |
12547-95-4 |
| C4Th |
thorium tetracarbide |
52931-63-2 |
| C4Ti |
titanium tetracarbide |
12547-96-5 |
| C4U |
uranium tetracarbide |
64539-55-5 |
| C4Y |
monoyttrium tetracarbide |
12547-98-7 |
