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Profile: FEW Chemicals GmbH develops and produces specialty chemicals. We are accredited with DIN EN ISO 9001 and DIN EN ISO 14001 certification. Our products find application as functional dyes in CD-R, DVD/R, BD-R, computer-to-plate, as fluorescence marker, laser dyes, laser filters and NIR absorbers, or as nano varnish and nano additives for surface refinement. Our functional dyes include solvent soluble cyanine, water soluble cyanine and merocyanine dyes. We offer anti-adhesive topcoats, nano additives, corrosion-resistant coatings, scratch-resistant topcoats and filter coatings.

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• [5-[2-(3-Ethyl-3H-benzothiazol-2-ylidene)ethylidene]-4-oxo-2-thioxothiazolidin-3-yl]acetic acid

IUPAC Name: 2-[(5Z)-5-[(2E)-2-(3-ethyl-1,3-benzothiazol-2-ylidene)ethylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]acetic acid | CAS Registry Number: 25962-03-2
Synonyms: EINECS 247-373-8, CID6438046, 5-((3-Ethylbenzothiazol-2(3H)-ylidene)ethylidene)-4-oxo-2-thioxothiazolidin-3-acetic acid, 100843-18-3, 125295-41-2, 3-Thiazolidineacetic acid, 5-((3-ethyl-2(3H)-benzothiazolylidene)ethylidene)-4-oxo-2-thioxo-, 3-Thiazolidineacetic acid, 5-(2-(3-ethyl-2(3H)-benzothiazolylidene)ethylidene)-4-oxo-2-thioxo-

Molecular Formula:	C₁₆H₁₄N₂O₃S₃	Molecular Weight:	378.488960 [g/mol]
H-Bond Donor:	1	H-Bond Acceptor:	4

InChIKey: NVXMOCINNAPHSD-HAKHBUOSSA-N

• 2-[2-[2-Chloro-3-[2-(3-ethyl-1,3-dihydro-1,1-dimethyl-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-3-ethyl-1,1-dimethyl-1H-benz[e]indolium 4-methylbenzenesulfonate

IUPAC Name: 2-[2-[2-chloro-3-[2-(3-ethyl-1,1-dimethylbenzo[e]indol-3-ium-2-yl)ethenyl]cyclohex-2-en-1-ylidene]ethylidene]-3-ethyl-1,1-dimethylbenzo[e]indole;4-methylbenzenesulfonate | CAS Registry Number: 460337-33-1
Synonyms: KB-166528, 2-[2-[2-chloro-3-[2-(3-ethyl-1,3-dihydro-1,1-dimethyl-2h-benz[e]indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-3-ethyl-1,1-dimethyl-1h-benz[e]indolium 4-methylbenzenesulfonate

Molecular Formula:	C₄₉H₅₁ClN₂O₃S	Molecular Weight:	783.458840 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	4

InChIKey: DSCYRBZZAYJOOE-UHFFFAOYSA-M

• 1,3-Dimethyl-5-[2-(1-methylpyrrolidin-2-ylidene)ethylidene]pyrimidine-2,4,6-trione

IUPAC Name: 1,3-dimethyl-5-[2-(1-methylpyrrolidin-2-ylidene)ethylidene]-1,3-diazinane-2,4,6-trione | CAS Registry Number: 428519-09-9
Synonyms: 1,3-DIMETHYL-5-[2-(1-METHYLPYRROLIDIN-2-YLIDENE)ETHYLIDENE]PYRIMIDINE-2,4,6-TRIONE, AGN-PC-00KFFM, KB-150222, 1,3-dimethyl-5-[(2E)-2-(1-methylpyrrolidin-2-ylidene)ethylidene]-1,3-diazinane-2,4,6-trione

Molecular Formula:	C₁₃H₁₇N₃O₃	Molecular Weight:	263.292380 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	4

InChIKey: BUVPIPXDBJMXEK-UHFFFAOYSA-N

• 3-Ethyl-5-[(1-methyl-2-pyrrolidinylidene)ethylidene]-2-thioxooxazolidin-4-one

IUPAC Name: (5E)-3-ethyl-5-[(2Z)-2-(1-methylpyrrolidin-2-ylidene)ethylidene]-2-sulfanylidene-1,3-oxazolidin-4-one | CAS Registry Number: 41504-26-1
Synonyms: MolPort-002-131-969, EINECS 255-417-2, CID5717530, BAS 00009518, 3-Ethyl-5-((1-methyl-2-pyrrolidinylidene)ethylidene)-2-thioxooxazolidin-4-one

Molecular Formula:	C₁₂H₁₆N₂O₂S	Molecular Weight:	252.332640 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	3

InChIKey: YADMFLGOGVPZGG-PCCLLEMOSA-N

• 1-Butyl-2-(2-[3-[2-(1-butyl-1H-benzo[cd]indol-2-ylidene)ethylidene]-2-phenylcyclopent-1-enyl]vinyl)benzo[cd]indolium tetrafluoroborate

IUPAC Name: 1-butyl-2-[2-[3-[2-(1-butylbenzo[cd]indol-1-ium-2-yl)ethenyl]-2-phenylcyclopent-2-en-1-ylidene]ethylidene]benzo[cd]indole;tetrafluoroborate | CAS Registry Number: 913627-83-5
Synonyms: CTK5G9418, AG-H-74828, KB-152506, 1-BUTYL-2-(2-[3-[2-(1-BUTYL-1H-BENZO[CD]INDOL-2-YLIDENE)-ETHYLIDENE]-2-PHENYL-CYCLOPENT-1-ENYL]-VINYL)-BENZO[CD]INDOLIUM TETRAFLUOROBORATE, 1-butyl-2-(2-[3-[2-(1-butyl-1h-benzo[cd]indol-2-ylidene)ethylidene]-2-phenylcyclopent-1-enyl]vinyl)benzo[cd]indolium tetrafluoroborate

Molecular Formula:	C₄₅H₄₃BF₄N₂	Molecular Weight:	698.640933 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	6

InChIKey: KSOALGXQURBVDO-UHFFFAOYSA-N

• 2-Thioxo-3-Ethyl-4-Oxo-5-(2-(N-Methyl-1,3-Thiazolin-2-Yliden)-Eth-1-Yliden)-1,2-Oxazolidine

IUPAC Name: (5E)-3-ethyl-5-[(2E)-2-(3-methyl-1,3-thiazolidin-2-ylidene)ethylidene]-2-sulfanylidene-1,3-oxazolidin-4-one | CAS Registry Number: 35795-44-9
Synonyms: EINECS 252-734-8, NSC119679, CID5498516, NSC 119679, 3-Ethyl-5-((3-methylthiazolidin-2-ylidene)ethylidene)-2-thioxooxazolidin-4-one, 4-Oxazolidinone, 3-ethyl-5-((3-methyl-2-thiazolidinylidene)ethylidene)-2-thioxo-, 4-Oxazolidinone, 3-ethyl-5-(2-(3-methyl-2-thiazolidinylidene)ethylidene)-2-thioxo-

Molecular Formula:	C₁₁H₁₄N₂O₂S₂	Molecular Weight:	270.371060 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	3

InChIKey: SAEAAROWQNNEDY-KBXRYBNXSA-N

• 2-[2-[2-Chloro-3-[(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-1,3,3-trimethyl-3H-indolium tetrafluoroborate(1-)

IUPAC Name: 2-[2-[2-chloro-3-[2-(1,3,3-trimethylindol-1-ium-2-yl)ethenyl]cyclohex-2-en-1-ylidene]ethylidene]-1,3,3-trimethylindole;tetrafluoroborate | CAS Registry Number: 439859-04-8
Synonyms: KB-166523, 2-[2-[2-chloro-3-[(1,3-dihydro-1,3,3-trimethyl-2h-indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-1,3,3-trimethyl-3h-indolium tetrafluoroborate

Molecular Formula:	C₃₂H₃₆BClF₄N₂	Molecular Weight:	570.899253 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	6

InChIKey: CHJQJBNHNFXMEZ-UHFFFAOYSA-N

• 1,3-Dimethyl-5-[2-(3-methyloxazolidin-2-ylidene)ethylidene]pyrimidine-2,4,6-trione

IUPAC Name: 1,3-dimethyl-5-[2-(3-methyl-1,3-oxazolidin-2-ylidene)ethylidene]-1,3-diazinane-2,4,6-trione | CAS Registry Number: 428519-06-6
Synonyms: 1,3-DIMETHYL-5-[2-(3-METHYLOXAZOLIDIN-2-YLIDENE)ETHYLIDENE]PYRIMIDINE-2,4,6-TRIONE, AGN-PC-00KFFK, KB-150223, 1,3-dimethyl-5-[(2Z)-2-(3-methyl-1,3-oxazolidin-2-ylidene)ethylidene]-1,3-diazinane-2,4,6-trione

Molecular Formula:	C₁₂H₁₅N₃O₄	Molecular Weight:	265.265200 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	5

InChIKey: JZEGWOILOCWEHS-UHFFFAOYSA-N

• [4-[2-(4-Fluorophenyl)vinyl]phenyl]diphenylamine (CAS: 666830-53-1)

• 2-[5-(1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1,3-pentadien-1-yl]-1,3,3-trimethyl-3H-indolium chloride

IUPAC Name: 1,3,3-trimethyl-2-[5-(1,3,3-trimethylindol-1-ium-2-yl)penta-2,4-dienylidene]indole;chloride | CAS Registry Number: 54268-70-1
Synonyms: 2-[5-(1,3-DIHYDRO-1,3,3-TRIMETHYL-2H-INDOL-2-YLIDENE)-1,3-PENTADIEN-1-YL]-1,3,3-TRIMETHYL-3H-INDOLIUM CHLORIDE, CTK5A0265, AG-F-87835, KB-166624, 3H-Indolium,2-[5-(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1,3-pentadienyl]-1,3,3-trimethyl-, chloride

Molecular Formula:	C₂₇H₃₁ClN₂	Molecular Weight:	419.001440 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	2

InChIKey: KVISPVDSKYDJKS-UHFFFAOYSA-M

• 3-Ethyl-2-[3-(3-ethyl-1,3-dihydro-1,1-dimethyl-2H-benz[e]indol-2-ylidene)-1-propen-1-yl]-1,1-dimethyl-1H-benz[e]indolium hexafluorophosphate(1-) (1:1)

IUPAC Name: 3-ethyl-2-[3-(3-ethyl-1,1-dimethylbenzo[e]indol-3-ium-2-yl)prop-2-enylidene]-1,1-dimethylbenzo[e]indole;hexafluorophosphate | CAS Registry Number: 769933-13-3
Synonyms: KB-182015, 3-ethyl-2-[3-(3-ethyl-1,3-dihydro-1,1-dimethyl-2h-benz[e]indol-2-ylidene)-1-propen-1-yl]-1,1-dimethyl-1h-benz[e]indolium hexafluorophosphate

Molecular Formula:	C₃₅H₃₇F₆N₂P	Molecular Weight:	630.645861 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	8

InChIKey: MSYRFWYDNZSHNA-UHFFFAOYSA-N

• 4,5:4',5'-Dibenzo-1,1'-Dibutyl-3,3,3',3'-Tetramethylindacarbocyanine Perchlorate

IUPAC Name: 3-butyl-2-[3-(3-butyl-1,1-dimethylbenzo[e]indol-3-ium-2-yl)prop-2-enylidene]-1,1-dimethylbenzo[e]indole;perchlorate | CAS Registry Number: 189189-12-6
Synonyms: CTK0H1400, AG-E-38079, 1H-Benz[e]indolium, 3-butyl-2-[3-(3-butyl-1,3-dihydro-1,1-dimethyl-2H-benz[e]indol-2-ylidene)-1-propen-1-yl]-1,1-dimethyl-, perchlorate (1:1)

Molecular Formula:	C₃₉H₄₅ClN₂O₄	Molecular Weight:	641.238600 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	5

InChIKey: SYWSNLJHGCYMOK-UHFFFAOYSA-M

• 2-[5-[1,1-Dimethyl-3-(4-sulfobutyl)-1,3-dihydrobenzo[e]indol-2-ylidene]penta-1,3-dienyl]-1,1-dimethyl-3-(4-sulfobutyl)-1H-benzo[e]indolium inner salt sodium salt

IUPAC Name: sodium 4-[2-[(1E,3E,5E)-5-[1,1-dimethyl-3-(4-sulfonatobutyl)benzo[e]indol-2-ylidene]penta-1,3-dienyl]-1,1-dimethylbenzo[e]indol-3-ium-3-yl]butane-1-sulfonate | CAS Registry Number: 64285-36-5
Synonyms: Dye NK 1841, NK 1841 (Dye), NK-1841, CID11968048, 1H-Benz(e)indolium, 2-(5-(1,3-dihydro-1,1-dimethyl-3-(4-sulfobutyl)-2H-benz(e)indol-2-ylidene)-1,3-pentadienyl)-1,1-dimethyl-3-(4-sulfobutyl)-, hydroxide, inner salt, sodium salt

Molecular Formula:	C₄₁H₄₅N₂NaO₆S₂	Molecular Weight:	748.925570 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	7

InChIKey: LAYIHRUYRMYLTJ-UHFFFAOYSA-M

• 5-tert-Butyl-2-(2-(4-(2-(5-tert-butylbenzoxazol-2-yl)vinyl)phenyl)vinyl)benzoxazole

IUPAC Name: 5-tert-butyl-2-[2-[4-[2-(5-tert-butyl-1,3-benzoxazol-2-yl)ethenyl]phenyl]ethenyl]-1,3-benzoxazole | CAS Registry Number: 64506-22-5
Synonyms: 5-TERT-BUTYL-2-(2-(4-(2-(5-TERT-BUTYLBENZOXAZOL-2-YL)VINYL)PHENYL)VINYL)BENZOXAZOLE, KB-198664

Molecular Formula:	C₃₂H₃₂N₂O₂	Molecular Weight:	476.608680 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	4

InChIKey: UNGZKPWANFSGJU-UHFFFAOYSA-N

• 3-Butyl-2-[3-(3-butyl-1,3-dihydro-1,1-dimethyl-2H-benz[e]indol-2-ylidene)-1-propen-1-yl]-1,1-dimethyl-1H-benz[e]indolium iodide

IUPAC Name: 3-butyl-2-[3-(3-butyl-1,1-dimethylbenzo[e]indol-3-ium-2-yl)prop-2-enylidene]-1,1-dimethylbenzo[e]indole;iodide | CAS Registry Number: 886046-46-4
Synonyms: KB-181291, 3-butyl-2-[3-(3-butyl-1,3-dihydro-1,1-dimethyl-2h-benz[e]indol-2-ylidene)-1-propen-1-yl]-1,1-dimethyl-1h-benz[e]indolium iodide

Molecular Formula:	C₃₉H₄₅IN₂	Molecular Weight:	668.692470 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	2

InChIKey: HWWGFJINQTYLLX-UHFFFAOYSA-M

• 2-[2-[2-Chloro-3-[2-[1,3-dihydro-3,3-dimethyl-1-(4-sulfobutyl)-2H-indol-2-ylidene]ethylidene]-1-cyclopenten-1-yl]ethenyl]-3,3-dimethyl-1-(4-sulfobutyl)-3H-indolium inner salt sodium salt

IUPAC Name: sodium;4-[(2Z)-2-[(2E)-2-[2-chloro-3-[(E)-2-[3,3-dimethyl-1-(4-sulfonatobutyl)indol-1-ium-2-yl]ethenyl]cyclopent-2-en-1-ylidene]ethylidene]-3,3-dimethylindol-1-yl]butane-1-sulfonate | CAS Registry Number: 757960-10-4
Synonyms: IR-806, Dye content 90 %

Molecular Formula:	C₃₇H₄₄ClN₂NaO₆S₂	Molecular Weight:	735.327 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	7

InChIKey: MIOUAELAUIYKFC-UHFFFAOYSA-M

• 1-Butyl-2-(2-[3-[2-(1-butyl-1H-benzo[cd]indol-2-ylidene)ethylidene]-2-chloro-cyclohex-1-enyl]vinyl)benzo[cd]indolium tetrafluoroborate

IUPAC Name: 1-butyl-2-[2-[3-[2-(1-butylbenzo[cd]indol-1-ium-2-yl)ethenyl]-2-chlorocyclohex-2-en-1-ylidene]ethylidene]benzo[cd]indole;tetrafluoroborate | CAS Registry Number: 913633-67-7
Synonyms: KB-152505, 1-butyl-2-(2-[3-[2-(1-butyl-1h-benzo[cd]indol-2-ylidene)ethylidene]-2-chloro-cyclohex-1-enyl]vinyl)benzo[cd]indolium tetrafluoroborate

Molecular Formula:	C₄₀H₄₀BClF₄N₂	Molecular Weight:	671.016613 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	6

InChIKey: UTAGKTNDTLMRTI-UHFFFAOYSA-N

• 4,5:4',5'-Dibenzo-1,1'-Dibutyl-3,3,3',3'-Tetramethylindadicarbocyanine Perchlorate

IUPAC Name: (2E)-3-butyl-2-[(2E,4E)-5-(3-butyl-1,1-dimethylbenzo[e]indol-3-ium-2-yl)penta-2,4-dienylidene]-1,1-dimethylbenzo[e]indole;perchlorate | CAS Registry Number: 121482-73-3
Synonyms: MFCD03093218, AKOS000814320, FT-0617139, 4,5:4',5'-Dibenzo-1,1-dibutyl-3,3,3',3'-tetramethylindadicarbocyanine perchlorate

Molecular Formula:	C₄₁H₄₇ClN₂O₄	Molecular Weight:	667.287 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	5

InChIKey: SKOOGHDIKOAMMA-UHFFFAOYSA-M

• 2-[2-[2-Chloro-3-[2-(3-methyl-3H-benzthiazol-2-ylidene)ethylidene]-1-cyclopenten-1-yl]ethenyl]-3-methylbenzthiazolium

IUPAC Name: 2-[2-[2-chloro-3-[2-(3-methyl-1,3-benzothiazol-3-ium-2-yl)ethenyl]cyclopent-2-en-1-ylidene]ethylidene]-3-methyl-1,3-benzothiazole | CAS Registry Number: 193687-61-5
Synonyms: 2-[2-[2-Chloro-3-[2-(3-methyl-3H-benzthiazol-2-ylidene)-ethylidene]-1-cyclopenten-1-yl]ethenyl]-3-methyl-benzthiazolium, CTK0H1494, AG-E-41531, 2-[2-[2-CHLORO-3-[2-(3-METHYL-3H-BENZTHIAZOL-2-YLIDENE)ETHYLIDENE]-1-CYCLOPENTEN-1-YL]ETHENYL]-3-METHYLBENZTHIAZOLIUM

Molecular Formula:	C₂₅H₂₂ClN₂S₂+	Molecular Weight:	450.038580 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	3

InChIKey: NCSXLFKYNSSSIO-UHFFFAOYSA-N