Funktionelle Farbstoffe
| Code/CAS | Chemischer Name | Formel |
|---|---|---|
|
00360 536-17-4 |
5- (4- Dimethylaminobenzylidene) rhodanine |
 C12H12N2OS2 |
|
00790 28172-08-9 |
5, 5’- Bis(3- cyano- 1- ethyl- 4- methyl- 6- oxo- 2- pyridone)trimethine oxonole |
 C21H20N4O4 |
|
03680 6813-38-3 |
2, 2´- Dipyridyl- 4, 4′- dicarboxylic acid |
 C12H8N2O4 |
|
03910 54389-98-9 |
4, 5:4’, 5’- Dibenzo- 1, 1’, 3, 3, 3’, 3’- hexamethylindadicarbocyanine perchlorate |
 C35H35N2.ClO4 |
|
03930 121482-73-3 |
4, 5:4’, 5’- Dibenzo- 1, 1’- dibutyl- 3, 3, 3’, 3’- tetramethyl-indadicarbocyanine perchlorate |
 C41H47N2.ClO4 |
|
03940 76433-27-7 |
2- [4- (4- Dimethylaminophenyl) – 1, 3- butadienyl] – 1, 3, 3-trimethyl- 3H- indolium perchlorate |
 C23H27N2.ClO4 |
|
04720 905-96-4 |
3, 3’- Diethyloxacarbocyanine iodide |
 C21H21N2O2.I |
|
05290 70024-44-1 |
1, 1’- Bis(4- sulfophenyl) – 3, 3’- dicarboxy- 5, 5’-dihydroxypyrazolo- 4, 4’- trimethine oxonole tetrasodium salt |
 C23H12N4Na4O12S2 |
|
06170 25152-49-2 |
3, 6- Bis(ethylamino) – 9- (2- carboxyphenyl- 2, 7- dimethyl-3H- xanthylium betaine |
 C26H26N2O3 |
|
06660 137147-59-2 |
4, 5:4’, 5’- Dibenzo- 1, 1’- dibutyl- 3, 3, 3’, 3’- tetramethyl-indadicarbocyanine hexafluorophosphate |
 C41H47N2.PF6 |
|
06830 131443-20-4 |
1, 1’- Dibutyl- 3, 3, 3’, 3’- tetramethylindadicarbocyanine perchlorate |
 C33H43N2.ClO4 |
|
06870 189189-12-6 |
4, 5:4’, 5’- Dibenzo- 1, 1’- dibutyl- 3, 3, 3’, 3’-tetramethylindacarbocyanine perchlorate |
 C39H45N2.ClO4 |
|
07170 206439-63-6 |
1,1´-Di-n-butyl-3,3,3´,3´-tetramethylnaphtho[1,2-d]- pyrrolo-2,2´-pentamethincyanine tetrafluoroborate |
C41H47BF4N2 |
|
07190 4182-80-3 |
1,4-Bis[N,N-bis(4-N,N-di-n-butylaminophenyl)amino]benzene |
C62H92N6 |
|
07410 155795-24-7 |
10- Acetoxy- 1, 1’- bis(4- sulfobutyl) – 4, 5:4’, 5’- dibenzo- 3, 3,3’, 3’- tetramethylindatricarbocyanine betaine sodium salt |
 C45H49N2NaO8S2 |
|
07420 – |
1, 1’- Bis(4- sulfobutyl) – 3, 3, 3’, 3’- tetramethylindadicarbocyanine betaine sodium salt |
 C33H41N2NaO6S2 |
|
07770 62669-60-7 |
3, 7- Bis(ethylamino) – 8- methylbenzo[a] phenoxazinium perchlorate |
 C21H22N3O.ClO4 |
|
07830 – |
1, 1’- Dibutyl- 3, 3, 3’, 3’- tetramethylindadicarbocyanine hexafluorophosphate |
 C33H43N2.PF6 |
|
07850 215370-93-7 |
4, 5- Benzo- 1, 1’- dibutyl- 3, 3, 3’, 3’, 5’- pentamethylindacarbocyanine perchlorate |
 C36H45N2.ClO4 |
|
08290 326801-92-7 |
4, 5:4’, 5’- Dibenzo- 1, 1’- diisopentyl- 3, 3, 3’, 3’- tetramethylindadicarbo- cyanine hexafluorophosphate |
 C43H51N2.PF6 |
|
08370 599177-24-9 |
4, 5:4’, 5’- Dibenzo- 1, 1’, 3, 3, 3’, 3’- hexamethylindacarbocyanine hexafluorophosphate |
 C33H33N2.PF6 |
|
08390 – |
4, 5:4’, 5’- Dibenzo- 1- ethyl- 1’, 3, 3, 3’, 3’- pentamethylindacarbocyanine hexafluorophosphate |
 C34H35N2.PF6 |
|
08610 28705-46-6 |
Ethyl 7- diethylaminocoumarin- 3- carboxylate |
 C16H19NO4 |
|
09140 94856-25-4 |
2- (2- Adamantylidene) – 3- [1- (2, 5- dimethyl- 3- furanyl)ethylidene] – succinanhydride |
 C22H24O4 |
|
09850 – |
4, 5:4’, 5’- Dibenzo- 1, 1’- diethyl- 3, 3, 3’, 3’- tetramethylindadicarbocyanine hexafluorophosphate |
 C37H39N2.PF6 |
|
11020 663161-10-2 |
4, 5:4′, 5′- Dibenzo- 1, 1′- dibutyl- 3, 3, 3′, 3′- tetramethylindatricarbocyanine hexafluorophosphate |
 C43H49N2.PF6 |
|
11040 207399-07-3 |
11- Chloro- 1, 1′- dipropyl- 3, 3, 3′, 3′- tetramethyl- 10, 12-trimethylene- indatricarbocyanine iodide |
 C36H44ClN2.I |
|
11360 777816-94-1 |
Dye 1136 Dichlorophthalocyanine disulfonic acid cobalt complex |
C32H14CoCl2N8O6S2 |
|
11680 – |
4´´- Bromo- 4, 5:4´, 5´- dibenzo- 1, 1´, 3, 3, 3´, 3´- hexamethyl- indacarbocyanine perchlorate |
 C33H32BrN2.ClO4 |
|
11710 – |
4, 5:6´, 7´- Dibenzo- 1, 1´, 3, 3, 3´, 3´- hexamethylindacarbocyanine hexafluorophosphate |
 C33H33N2.PF6 |
|
11800 28984-20-5 |
Bis(dithiobenzil) nickel |
 C28H20NiS4 |
|
11810 38951-97-2 |
Bis(4, 4’- dimethoxydithiobenzil) nickel |
 C32H28NiO4S4 |
|
12290 143193-48-0 |
1- (2- Chloro- 5- sulfophenyl) – 3- methyl- 4- (4- dimethylamino- benzylidene) – 2- pyrazolin- 5- one triethylammonium salt |
 C25H33ClN4O4S |
|
12320 92050-35-6 |
4, 4’- Bis[1- (4- sulfophenyl) – 3- methyl- 2- pyrazolin- 5- one]- α- methyl- trimethine oxonole tripotassium salt |
 C24H19K3N4O8S2 |
|
12350 27969-56-8 |
4, 4’- Bis[1- (4- sulfophenyl) – 3- methyl- 2- pyrazolin- 5- one]- pentamethine oxonole |
 C25H22N4O8S2 |
|
12500 19381-50-1 |
1- Nitroso- 2- naphthol- 6- sulfonic acid sodium salt, iron III complex |
 C30H15FeN3Na3O15S3 |
|
12510 101708-53-6 |
8- Acetamido- 2- (2- hydroxy- 5- sulfophenyl) azo- 1- naphthol- 3, 6- disulfonic acid |
 C18H15N3O12S3 |
|
12660 50663-19-9 |
1, 3- Dimethyl- 5- [2- (3- methyl- 2- thiazolidinylidene)ethylidene] – 2- thioxoimidazolidin- 4- one |
 C11H15N3OS2 |
|
12670 63148-97-0 |
3, 3’- Bis(3- sulfopropyl) – 5, 5’- dimethoxythiacyanine betaine triethylammonium salt |
 C29H41N3O8S4 |
|
12680 41503-61-1 |
5, 5’- Diphenyl- 3, 3’, 9- triethyloxacarbocyanine ethylsulfate |
 C35H33N2O2.C2H5O4S |
|
12690 77837-26-4 |
5, 9- Dimethyl- 3- ethyl- 5’- phenyl- 3’- (4- sulfobutyl) oxathia-carbocyanine betaine |
 C31H32N2O4S2 |
|
12700 143269-53-8 |
4, 5- Benzo- 1’- ethyl- 3- methylquinathiacarbocyanine iodide |
 C26H23N2S.I |
|
12710 117898-57-4 |
5, 5’- Dimethyl- 9- ethyl- 3- (2- hydroxyethyl) – 3’- (3-sulfatobutyl) – thiacarbocyanine betaine |
 C27H32N2O5S3 |
|
12720 103534-62-9 |
3- (2- Hydroxyethyl) – 9- methyl- 3’- (3- sulfatobutyl)thiacarbocyanine betaine |
 C24H26N2O5S3 |
|
12730 77418-33-8 |
3- Butyl- 1- ethyl- 5- [3- (4- sulfobutyl) – 2- benzoxazolylidene] – ethylidene- 2- thiohydantoine potassium salt |
 C22H28KN3O5S2 |
|
12740 977-96-8 |
1, 1’- Diethyl- 2, 2’- cyanine iodide |
 C23H23N2.I |
|
12760 52525-52-7 |
5, 5’- Dimethyl- 9- ethyl- 3- (2- hydroxyethyl) – 3’- (3- sulfopropyl) – thiacarbocyanine betaine |
 C26H30N2O4S3 |
|
12770 2602-17-7 |
3, 3’- Diethylthiacyanine ethylsulfate |
 C19H19N2S2.C2H5O4S |
|
12780 51257-37-5 |
4, 5- Diphenyl- 3- ethyl- 2- {3- ethyl- 5- [2- (1- ethyl- 4-quinolinylidene) – ethylidene] – 4- oxo- 2-thiazolidinylidene}methylthiazolium bromide |
 C36H34N3OS2.Br |
|
12790 143269-69-6 |
5- {2- [3- (2- Carboxyethyl) – 2- benzoxazolylidene]ethylidene}- 3- ethyl- 1- methyl- 2- thiohydantoine potassium salt |
 C18H18KN3O4S |
|
12810 34330-15-9 |
3- Allyl- 5- (1- methyl- 2- pyridylidene) rhodanine |
 C12H12N2OS2 |
|
12820 2445-60-5 |
1, 3- Dimethyl- 5- [2- (1- methyl- 2- pyrrolidinylidene) – ethylidene] – 2- thiohydantoine |
 C12H17N3OS |
|
12830 144940-73-8 |
3- Carboxymethyl- 5- [1- (3- methyl- 2- thiazolidinylidene) – 2-propylidene] rhodanine sodium salt |
 C12H13N2NaO3S3 |
|
12840 35501-76-9 |
3, 3’- Bis(4- sulfobutyl) – 5, 5’- diphenyl- 9- ethyloxacarbocyanine betaine sodium salt |
 C39H39N2NaO8S2 |
|
12850 32634-36-9 |
5, 5’- Dicyano- 3- (4- sulfobutyl) – 1, 1’, 3’- triethylimidacarbocyanine betaine |
 C29H32N6O3S |
|
12860 52525-55-0 |
3- Ethyl- 9- methy- 3’- (3- sulfatobutyl) thiacarbocyanine betaine |
 C24H26N2O4S3 |
|
12870 28784-39-6 |
4, 5- Benzo- 3’, 9- diethyl- 5’- methyl- 3- (3- sulfopropyl) – thiacarbocyanine betaine |
 C29H30N2O3S3 |
|
12880 23216-67-3 |
3, 3’- Bis(3- sulfopropyl) – 4, 5:4’, 5’- dibenzo- 9- ethylthiacarbocyanine betaine triethylammonium salt |
 C39H47N3O6S4 |
|
12890 67326-80-1 |
3, 3’- Bis(3- sulfopropyl) – 5- chlor- 9- ethyl- 5’- phenyloxacarbocyanine betaine sodium salt |
 C31H30ClN2NaO8S2 |
|
12900 60760-42-1 |
4, 5- Benzo- 3, 3′- bis(3- sulfopropyl) thiacyanine betaine triethylammonium salt |
 C31H39N3O6S4 |
|
12910 33628-03-4 |
3, 3’- Bis(3- sulfopropyl) – 5, 5’- diphenyl- 9- ethyloxacarbocyanine betaine sodium salt |
 C37H35N2NaO8S2 |
|
12920 105176-22-5 |
4, 5- Diphenyl- 2- {5- [3- ethoxy- 4- (3- ethyl- 5- methyl- 2-benzthiazolin- ylidene) – 2- butenylidene] – 3- ethyl- 4- oxo- 2-thiazolidinylidene}- methyl- 3- ethylthiazolium iodide |
 C39H40N3O2S3.I |
|
12930 35795-44-9 |
3- Ethyl- 5- (3- methyl- 2- thiazolidinylidene) ethylidene- 2-thioxo- oxazolidin- 4- one |
 C11H14N2O2S2 |
|
12940 52749-17-4 |
3- Carboxymethyl- 3’, 9- diethyl- 5, 5’- dimethylthiacarbocyanine betaine |
 C25H26N2O2S2 |
|
12950 203785-75-5 |
3- Allyl- 5- (3- ethyl- 4- methyl- 2- thiazolinylidene) rhodanine |
 C12H14N2OS3 |
|
13460 63811-40-5 |
5, 5’- Bis(4, 6- dihydroxy- 2- mercaptopyrimidine) pentamethine oxonole |
 C13H10N4O4S2 |
|
14510 152340-26-6 |
N, N, N’, N’- Tetrakis(4- dibutylaminophenyl) – p- phenylene diaminium hexafluorophosphate |
 C62H92N6.PF6 |
|
15000 88358-74-1 |
N, N, N’, N’- Tetrakis(4- dibutylaminophenyl) – p- phenylene diaminium diperchlorate |
 C62H92N6.2ClO4 |
|
15050 7696-70-0 |
4- Dimethylamino- 4’- nitrosodiphenylamine |
 C14H15N3O |
|
16020 5496-71-9 |
N, N, N’, N’- Tetrakis(4- dibutylaminophenyl) – p- phenylene diaminium dihexafluoroantimonate |
 C62H92N6.2SbF6 |
|
16640 113869-06-0 |
Ethyl 6, 7, 9, 10- tetrahydro- 7, 7, 10, 10- tetramethyl- 8H, 11H-quinolizino- [9, 9a, 1- gh] coumarin- 3- carboxylate |
 C22H27NO4 |
|
17021 27425-55-4 |
3- (2- Benzimidazolyl) – 7- diethylaminocoumarin |
 C20H19N3O2 |
|
17041 90-33-5 |
7- Hydroxy- 4- methylcoumarin |
 C10H8O3 |
|
17051 91-44-1 |
7- Diethylamino- 4- methylcoumarin |
 C14H17NO2 |
|
17080 41267-76-9 |
4- Methyl- 6, 7, 9, 10- tetrahydro- 8H, 11H- quinolizino[9, 9a, 1-gh] coumarin |
 C16H17NO2 |
|
17120 55804-66-5 |
Ethyl 6, 7, 9, 10- tetrahydro- 8H, 11H- quinolizino[9, 9a, 1- gh]coumarin- 3- carboxylate |
 C18H19NO4 |
|
17301 38465-55-3 |
Bis(4- dimethylaminodithiobenzil) nickel |
C32H30N2NiS4 |
|
17440 7385-67-3 |
9- Diethylaminobenzo[a] phenoxazone |
 C20H18N2O2 |
|
17530 89846-21-9 |
4- [4- (4- Dimethylaminophenyl) – 1, 3- butadienyl] – 1-ethylpyridinium perchlorate |
 C19H23N2.ClO4 |
|
17570 13558-31-1 |
9- (2- Carboxyphenyl) – 3, 6- diamino- 3H- xanthylium chloride |
 C20H15N2O3.Cl |
|
17590 62669-66-3 |
3, 6- Bis(ethylamino) – 9- (2- carboxyphenyl) – 2, 7- dimethyl-3H- xanthylium perchlorate |
 C26H27N2O3.ClO4 |
|
17640 989-38-8 |
3, 6- Bis(ethylamino) – 2, 7- dimethyl- 9- (2- ethoxycarbonylphenyl) – 3H- xanthylium chloride |
 C28H31N2O3.Cl |
|
17710 24796-94-9 |
3, 7- Bis(diethylamino) phenoxazinium perchlorate |
 C20H26N3O.ClO4 |
|
18131 87-01-4 |
7-(Dimethylamino)-4-methyl-coumarin |
C12H13NO2 |
|
19220 50378-83-1 |
1, 3’- Diethyl- 5′, 6- dimethoxy- 2, 2′- quinaselenacyanine iodide |
 C23H25N2O2Se.I |
|
19520 – |
3, 3’- Diethyl- 5- phenyl- 5′, 6′, 9- trimethyloxathiacarbocyanine perchlorate |
 C30H31N2OS.ClO4 |
|
19540 17636-08-7 |
3, 3’- Bis(2- carboxyethyl) – 5, 5′- dimethyl- 9- ethylthiacarbocyanine betaine |
 C27H28N2O4S2 |
|
19550 – |
5, 5’- Dimethoxy- 3, 3′, 9- triethyloxacarbocyanine thiocyanate |
 C25H29N2O4.SCN |
|
19610 – |
3, 3’- Diethyl- 6- diethylamino- 4′, 5′- diphenylbenzothiazolo-thiazolo- 2, 2′- trimethinecyanine iodide |
 C33H36N3S2.I |
|
19640 – |
3, 3’- Bis(2- sulfatoethyl) – 5, 5′- diphenyl- 9- ethyloxacarbocyanine betaine |
 C35H32N2O10S2 |
|
19670 – |
5’, 6’- Dimethyl- 5- methoxy- 3, 3′, 9- triethylselenathiacarbocyanine perchlorate |
 C26H31N2OSSe.ClO4 |
|
33050 28118-05-0 |
5- Chloro- 9- ethyl- 5′- phenyl- 3- (4- sulfobutyl) – 3′- (3-sulfopropyl) – oxacarbocyanine betaine sodium salt |
 C32H32ClN2NaO8S2 |
|
33320 143174-04-3 |
8- Amino- 2- (4- hydroxy- 3- methylphenyl) azo- 1- naphthol-3, 6- disulfonic acid disodium salt |
 C17H13N3Na2O8S2 |
|
33340 91101-24-5 |
1- (2- Chloro- 5- sulfophenyl) – 3- methyl- 4- (4- sulfophenyl)azo- 2- pyrazolin- 5- one disodium salt |
 C16H11ClN4Na2O7S2 |
|
33350 51858-17-4 |
4, 4’- Bis[1- (4- sulfophenyl) – 3- carboxy- 2- pyrazolin- 5-one] – pentamethine oxonole dipotassium salt |
 C25H16K2N4O12S2 |
|
33720 143269-64-1 |
2- Ethylhexyl 2- cyano- 4- (3- methyl- 2- oxazolinylidene)crotonate |
 C17H26N2O3 |
|
33790 86213-20-9 |
α- Cyano- 3, 4- dimethoxycinnamic acid |
 C12H11NO4 |
|
33820 143269-62-9 |
2- Ethylhexyl α- cyano- 3, 4- dimethoxycinnamate |
 C20H27NO4 |
|
33850 117133-81-0 |
Isobutyl α- cyano- 3, 4- methylenedioxycinnamate |
 C15H15NO4 |
|
33860 63524-66-3 |
2- Ethylhexyl α- cyano- 3, 4- methylenedioxycinnamate |
 C19H23NO4 |
|
33870 24139-57-9 |
α- Cyano- 5- phenyl- 2, 4- pentadienic acid |
 C12H9NO2 |
|
33900 131512-74-8 |
2- Ethylhexyl α- cyano- 5- phenyl- 2, 4- pentadienoate |
 C20H25NO2 |
|
34010 – |
3- (2- Acetoxyethyl) – 5, 6- dichloro- 2- [3- (3- ethyl- 2-thiazolidinylidene) – 1- propenyl] – 1- methylbenzimidazolium iodide |
 C20H24Cl2N3O2S.I |
|
34020 20328-87-4 |
2, 2’- [(2- Carboxy- p- phenylene) bis(iminovinylene) ] bis(3-ethyl- 2- thiazolinium) di iodide |
 C21H28N4O2S2.2I |
|
34040 93857-83-1 |
2- {3- Allyl- 5- [2- (1- ethyl- 4(1H) – quinolinylidene)ethylidene] – 4- oxo- 2- thiazolidinylidene}methyl- 5, 6-dimethyl- 3- ethyl- benzoxazolium bromide |
 C31H32N3O2S.Br |
|
34050 – |
2- [3- (1- Cyclohexyl- 3- methyl- 5- [2- (3- ethyl- 6, 7, 8, 9- tetrahydro- naphtho[2, 1- d] thiazol- 2- yliden) ethyliden] – 4-oxoimidazolidin- 2- yliden) – 1- propen- 1- yl] – 3- ethylbenzoxazolium Iodide |
 C37H42N4O2S.I |
|
34060 61105-57-5 |
3, 3’- Diethyl- 9- methyloxacarbocyanine perchlorate |
 C22H23N2O2.ClO4 |
|
34860 101-75-7 |
4- Phenylazodiphenylamine |
 C18H15N3 |
| 35880 |
1,2,3,3-Tetramethyl-benzo[6,7]indoleniniumhexafluorophosphate |
C16H18N·PF6 |
|
36780 6935-44-0 |
Ethyl α- cyano- 4- hydroxycinnamate |
 C12H11NO3 |
|
36790 3695-85-0 |
Methyl α- cyano- 4- hydroxycinnamate |
 C11H9NO3 |
|
36810 115324-57-7 |
Methyl α- cyano- 3- (1- naphthyl) acrylate |
 C15H11NO2 |
|
39980 253267-46-8 |
N, N, N’, N’-Tetrakis-[4- bis-(3- cyanopropyl)aminophenyl]- 1,4- benzoquinonediiminium-bis-hexafluorophosphate |
C62H68N14 · PF6 |
|
39990 253267-38-8 |
N, N, N’, N’ -Tetrakis-[4- bis-(3- cyanopropyl)-aminophenyl] -1,4- phenylendiamine- radical cation – hexafluorophosphate |
C62H68N14 · PF6 |
|
49810 1064-48-8 |
8- Amino- 7- (4- nitrophenyl) azo- 2- phenylazo- 1- naphthol-3, 6- disulfonic acid disodium salt |
 C22H14N6Na2O9S2 |
|
50510 99610-72-7 |
4, 6- Dinitro- 2- (2- hydroxyethyl) aminophenol |
 C8H9N3O6 |
|
57490 112078-08-7 |
N, N- Di- (2, 6- diisopropylphenyl) – 1, 6, 7, 12- (4- tert.butyl-phenoxy) – perylen- 3, 4, 9, 10- tetracarbonacid diimide |
 C88H90N2O8 |
|
58890 123174-58-3 |
N, N’- Di- (2, 6- diisopropylphenyl) – 1, 6, 7, 12- tetra- phenoxy-perylen- 3, 4, 9, 10- tetracarbon acid diimide |
 C72H58N2O8 |
|
59600 331861-93-9 |
N,N’-Di-(2,6-diisopropylphenyl)-1,6,7,12- tetra-(4-tert.-octylphenoxy)-perylen-3,4,9,10- tetracarbonsäurediimid |
C104H122N2O8 |
|
69460 1510824-40-4 |
N, N’- Di- (2- butoxy- 5- tert.- octyl- phenyl) – 1, 6, 7, 12-tetrachloro- perylen- 3, 4, 9, 10- tetracarbonsäurediimide |
 C60H62Cl4N2O6 |
|
70820 494762-23-1 |
1- Butyl- 2- [2- [3- [2- (1- butyl- 1, 3- dihydro- 3, 3- dimethyl-2H- indol- 2- ylidene) ethylidene] – 2- (1H- 1, 2, 4- triazol- 1-yl) – 1- cyclohexen- 1- yl] ethenyl] – 3, 3- dimethyl- 3H-indolium tetrafluoroborate |
 C40H50N5·BF4 |
|
74270 68239-70-3 |
Triethylammonnium 5-(3-ethylbenzothiazol-2(3H)- ylidene)-4-oxo-2-thioxothiazolidine-3-acetate |
C20H27N3O3S3 |
|
77280 177168-18-2 |
N-[2,5-Bis(anilinomethylene)cyclopentylidene]-N- phenylanilinium tetrafluoroborate |
C31H28BF4N3 |
|
77690 147613-95-4 |
N,N-di-n-butyl-2-(1,2-dihydro-3-hydroxy- 6-isopropyl-2- quinolylidene)-1,3- dioxoindan-5-carboxamide |
C30H34N2O4 |
