cyanine dye (CHEBI:37960)
Definition: Cyanine dyes are synthetic dyes with the general formula R2N[CH=CH]nCH=N(+)R2    <-> R2N(+)=CH[CH=CH]nNR2 (n is a small number) in which the nitrogen and part of the conjugated chain usually form part of a heterocyclic system, such as imidazole, pyridine, pyrrole, quinoline and thiazole.
Example SMILES structures:
[Na+].[H]C(=C([H])C([H])=C([H])C1=[N+](CCCCS([O-])(=O)=O)c2ccc3ccccc3c2C1(C)C)C([H])=C([H])C([H])=C1N(CCCCS([O-])(=O)=O)c2ccc3ccccc3c2C1(C)C
[H]C(=CC([H])=C1N(CCCCCC(=O)ON2C(=O)CCC2=O)c2ccc(cc2C1(C)C)S(O)(=O)=O)C1=[N+](CCCCCC(=O)ON2C(=O)CCC2=O)c2ccc(cc2C1(C)C)S([O-])(=O)=O
[I-].[H]C(=C1C=Cc2ccccc2N1CC)c1ccc2ccccc2[n+]1CC
[I-].[H]C(=C([H])c1cc[n+](CC)cc1)c1ccc(cc1)N(C)C
[Cl-].[H]C(=C1C=Cc2ccccc2N1CC)c1ccc2ccccc2[n+]1CC
[Br-].[H]C(=C1C=Cc2ccccc2N1CC)c1ccc2ccccc2[n+]1CC
[I-].[H]C(=C([H])c1cccc[n+]1CC)c1ccc(cc1)N(C)C
[H]C(C=C([H])C1=[N+](CCCCCC(=O)ON2C(=O)CCC2=O)c2ccc(cc2C1(C)C)S([O-])(=O)=O)=CC([H])=C1N(CCCCCC(=O)ON2C(=O)CCC2=O)c2ccc(cc2C1(C)C)S(O)(=O)=O
[H]C(=CC([H])=C1N(CC)c2ccc(cc2C1(C)C)S([O-])(=O)=O)C1=[N+](CCCCCC(=O)ON2C(=O)CCC2=O)c2ccc(cc2C1(C)C)S([O-])(=O)=O
[H]C(=CC([H])=C1N(CCCCCC(=O)ON2C(=O)CCC2=O)c2ccc(cc2C1(C)C)S([O-])(=O)=O)C1=[N+](CCCCCC(=O)ON2C(=O)CCC2=O)c2ccc(cc2C1(C)C)S([O-])(=O)=O
[H]C(C=C([H])C1=[N+](CCCCCC(=O)ON2C(=O)CCC2=O)c2ccc(cc2C1(C)C)S([O-])(=O)=O)=CC([H])=C1N(CC)c2ccc(cc2C1(C)C)S([O-])(=O)=O
[I-].[I-].[I-].[I-].[H]C(=CC([H])=C1Oc2ccccc2N1C)c1cc[n+](CCC(CCCC(CC[n+]2ccc(C([H])=CC([H])=C3Oc4ccccc4N3C)c3ccccc23)=[N+](C)C)=[N+](C)C)c2ccccc12
[I-].[I-].[I-].[I-].[H]C(=C1Oc2ccccc2N1C)c1cc[n+](CCC[N+](C)(C)CCC[N+](C)(C)CCC[n+]2ccc(C([H])=C3Oc4ccccc4N3C)c3ccccc23)c2ccccc12
[I-].[I-].[H]C(=C1Oc2ccccc2N1C)c1cc[n+](CCC[N+](C)(C)C)c2ccccc12
C1=CC=CC=2SC(=[N+](C12)C)/C=C/3\C=C(N(C4=CC=CC=C34)C=5C=CC=CC5)N(CCCN(C)C)CCC
C1=CC=CC=2SC(=[N+](C12)C)C(=C3C=C(N(C4=CC=CC=C34)C=5C=CC=CC5)N(CCCN(C)C)CCCN(C)C)[H]
[I-].[H]C(=C1C=C(Cl)N(c2ccccc2)c2ccccc12)c1sc2ccccc2[n+]1C
[I-].[I-].[H]C(=Cc1oc2ccccc2[n+]1C)C([H])=C1C=CN(CCC[N+](C)(C)C)c2ccccc12
[I-].[I-].[I-].[I-].[H]C(=C1C=CN(CCC[N+](C)(C)CCC[N+](C)(C)CCCN2C=CC(C=C2)=C([H])c2sc3ccccc3[n+]2C)C=C1)c1sc2ccccc2[n+]1C
[I-].[I-].[I-].[I-].[H]C(=C([H])c1sc2ccccc2[n+]1C)C([H])=C1C=CN(CCC[N+](C)(C)CCC[N+](C)(C)CCCN2C=CC(C=C2)=C([H])C([H])=C([H])c2sc3ccccc3[n+]2C)C=C1
[I-].[H]C(=Cc1sc2ccccc2[n+]1CC)C([H])=C1Sc2ccccc2N1CC
[I-].[H]C(=C([H])C([H])=C1N(CC)c2ccccc2C1(C)C)C([H])=C([H])C1=[N+](CC)c2ccccc2C1(C)C
[I-].[H]C(=CC([H])=C1Oc2ccccc2N1CC)C([H])=Cc1oc2ccccc2[n+]1CC
[I-].[H]C(=CC([H])=CC([H])=C1N(CC)c2ccccc2C1(C)C)C=C([H])C1=[N+](CC)c2ccccc2C1(C)C
[I-].[H]C(=CC([H])=CC([H])=C1Oc2ccccc2N1CC)C=C([H])c1oc2ccccc2[n+]1CC
CC1(C)c2cc(CC(=O)ON3C(=O)CCC3=O)ccc2N2CCC3OC4CC[N+]5=C(C4=CC3=C12)C(C)(C)c1cc(ccc51)S([O-])(=O)=O
[O-]Cl(=O)(=O)=O.[H]C(=C([H])C([H])=C1N(CCCCCCCCCCCCCCCCCC)c2ccccc2C1(C)C)C([H])=C([H])C1=[N+](CCCCCCCCCCCCCCCCCC)c2ccccc2C1(C)C
[O-]Cl(=O)(=O)=O.[H]C(=C([H])C1=[N+](CCCCCCCCCCCCCCCCCC)c2ccccc2C1(C)C)C([H])=C1N(CCCCCCCCCCCCCCCCCC)c2ccccc2C1(C)C
[O-]Cl(=O)(=O)=O.[H]C(=C([H])c1oc2ccccc2[n+]1CCCCCCCCCCCCCCCCCC)C([H])=C1Oc2ccccc2N1CCCCCCCCCCCCCCCCCC
[I-].[H]C(=CC([H])=C1N(CC)c2cc(Cl)c(Cl)cc2N1CC)c1n(CC)c2cc(Cl)c(Cl)cc2[n+]1CC
[Cl-].[H]C(C=C([H])C1=[N+](C)c2ccccc2C1(C)C)=CC([H])=C1N(Cc2ccc(CCl)cc2)c2ccccc2C1(C)C
[Cl-].[H]C(=Cc1n(-c2ccc(CCl)cc2)c2cc(Cl)c(Cl)cc2[n+]1-c1ccc(CCl)cc1)C([H])=C1Oc2ccccc2N1C
[K+].[K+].[H]C(=CC([H])=CC([H])=C1N(CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)C(O)=O)C=C([H])C1=[N+](CC)c2ccc3c(cc(cc3c2C1(C)C)S([O-])(=O)=O)S([O-])(=O)=O
[K+].[K+].[H]C(C=C([H])C1=[N+](CC)c2ccc3c(cc(cc3c2C1(C)C)S([O-])(=O)=O)S([O-])(=O)=O)=CC([H])=C1N(CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)C(O)=O
[K+].[K+].[H]C(=CC([H])=CC([H])=C1N(CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)C(O)=O)C=C([H])C1=[N+](CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)S([O-])(=O)=O
[K+].[K+].[H]C(C=C([H])C1=[N+](CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)S([O-])(=O)=O)=CC([H])=C1N(CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)C(O)=O
[H+].[H]C(=C([H])C1=[N+](CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)C(O)=O)C1=C(Cl)C(CCC1)=C([H])C([H])=C1N(CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)C(O)=O
[I-].[H]C(=CC([H])=C1C=Cc2ccccc2N1CC)c1ccc2ccccc2[n+]1CC
[I-].[I-].[I-].[I-].[H]C(=C1C=CN(CCC[N+](C)(C)CCC[N+](C)(C)CCCN2C=CC(C=C2)=C([H])c2oc3ccccc3[n+]2C)C=C1)c1oc2ccccc2[n+]1C
[I-].[I-].[I-].[I-].[H]C(=C([H])c1oc2ccccc2[n+]1C)C([H])=C1C=CN(CCC[N+](C)(C)CCC[N+](C)(C)CCCN2C=CC(C=C2)=C([H])C([H])=C([H])c2oc3ccccc3[n+]2C)C=C1
[I-].[I-].[H]C(=C1C=CN(CCC[N+](C)(C)C)C=C1)c1oc2ccccc2[n+]1C
[I-].[I-].[H]C(=C([H])c1oc2ccccc2[n+]1C)C([H])=C1C=CN(CCC[N+](C)(C)C)C=C1
[K+].CC[N+]1=C(/C=C/C=C/C=C2\N(C)c3ccc(NC(=O)CI)cc3C2(C)C)C(C)(C)c2c1ccc1c(cc(cc21)S([O-])(=O)=O)S([O-])(=O)=O
[K+].CC[N+]1=C(/C=C/C=C/C=C/C=C2\N(C)c3ccc(NC(=O)CI)cc3C2(C)C)C(C)(C)c2c1ccc1c(cc(cc21)S([O-])(=O)=O)S([O-])(=O)=O
[K+].[K+].CN1c2ccc(NC(=O)CI)cc2C(C)(C)\C1=C\C=C\C=C\C1=[N+](CCS([O-])(=O)=O)c2ccc3c(cc(cc3c2C1(C)C)S([O-])(=O)=O)S([O-])(=O)=O
[K+].[K+].CN1c2ccc(NC(=O)CI)cc2C(C)(C)\C1=C\C=C\C=C\C=C\C1=[N+](CCS([O-])(=O)=O)c2ccc3c(cc(cc3c2C1(C)C)S([O-])(=O)=O)S([O-])(=O)=O
[Br-].[H]C(=C(C)C([H])=C1Sc2ccc3ccccc3c2N1CC)c1sc2ccc3ccccc3c2[n+]1CC
Cc1ccc(cc1)S([O-])(=O)=O.[H]C(=C1Sc2ccccc2N1C)c1cc[n+](C)c2ccccc12
[I-].[I-].[H]C(=C1C=CN(CCC[N+](C)(C)C)c2ccccc12)c1sc2ccccc2[n+]1C
[I-].[I-].[H]C(=Cc1sc2ccccc2[n+]1C)C([H])=C1C=CN(CCC[N+](C)(C)C)c2ccccc12
[I-].[I-].[I-].[I-].[H]C(=C1Sc2ccccc2N1C)c1cc[n+](CCC[N+](C)(C)CCC[N+](C)(C)CCC[n+]2ccc(C([H])=C3Sc4ccccc4N3C)c3ccccc23)c2ccccc12
[I-].[I-].[I-].[I-].[H]C(=Cc1cc[n+](CCCC(CCCC(CCC[n+]2ccc(C([H])=CC([H])=C3Sc4ccccc4N3C)c3ccccc23)=[N+](C)C)=[N+](C)C)c2ccccc12)C([H])=C1Sc2ccccc2N1C
[H]C(=Cc1oc2cc(ccc2[n+]1CCCCCC(O)=O)S([O-])(=O)=O)C([H])=C1Oc2cc(ccc2N1CCCCCC(O)=O)S(O)(=O)=O
[I-].[H]C(=C([H])C1=[N+](CC)c2ccccc2C1(C)C)C([H])=C1N(CC)c2ccccc2C1(C)C
[H]C(=CC([H])=CC([H])=C1Cc2cc(ccc2N1CC)S(O)(=O)=O)C=C([H])C1=[N+](CCCCCC(O)=O)c2ccc(cc2C1)S([O-])(=O)=O
[H]C(C=C([H])C1=Nc2ccc(cc2C1(C)C)S(O)(=O)=O)=CC([H])=C1N(CCCCCC(O)=O)c2ccc(cc2C1(C)C)S(O)(=O)=O
[I-].[H]C(=CC([H])=C1Oc2ccccc2N1CC)c1oc2ccccc2[n+]1CC
[H]C(=C1C=CN(CCC[N+](C)(C)CCC[N+](C)(C)CCCN2C=CC(C=C2)=C([H])c2sc3ccccc3[n+]2C)C=C1)c1sc2ccccc2[n+]1C
[H]C(=C([H])c1sc2ccccc2[n+]1C)C([H])=C1C=CN(CCC[N+](C)(C)CCC[N+](C)(C)CCCN2C=CC(C=C2)=C([H])C([H])=C([H])c2sc3ccccc3[n+]2C)C=C1
[H]C(=C([H])C1=[N+](CC)c2ccccc2C1(C)C)C([H])=C1N(CC)c2ccccc2C1(C)C
[H]C(=CC([H])=C1Oc2ccccc2N1CC)C([H])=Cc1oc2ccccc2[n+]1CC
[H]C(=Cc1sc2ccccc2[n+]1CC)C([H])=C1Sc2ccccc2N1CC
[H]C(=C([H])C([H])=C1N(CC)c2ccccc2C1(C)C)C([H])=C([H])C1=[N+](CC)c2ccccc2C1(C)C
[H]C(=CC([H])=C1Oc2ccccc2N1CC)c1oc2ccccc2[n+]1CC
[H]C(=CC([H])=CC([H])=C1N(CC)c2ccccc2C1(C)C)C=C([H])C1=[N+](CC)c2ccccc2C1(C)C
[H]C(=CC([H])=CC([H])=C1Oc2ccccc2N1CC)C=C([H])c1oc2ccccc2[n+]1CC
[H]C(=C([H])C([H])=C1N(CCCCCCCCCCCCCCCCCC)c2ccccc2C1(C)C)C([H])=C([H])C1=[N+](CCCCCCCCCCCCCCCCCC)c2ccccc2C1(C)C
[H]C(=C([H])C1=[N+](CCCCCCCCCCCCCCCCCC)c2ccccc2C1(C)C)C([H])=C1N(CCCCCCCCCCCCCCCCCC)c2ccccc2C1(C)C
[H]C(=C([H])c1oc2ccccc2[n+]1CCCCCCCCCCCCCCCCCC)C([H])=C1Oc2ccccc2N1CCCCCCCCCCCCCCCCCC
[H]C(=C([H])C([H])=C([H])C1=[N+](CCCCCCCCCCCCCCCCCC)c2ccccc2C1(C)C)C([H])=C([H])C([H])=C1N(CCCCCCCCCCCCCCCCCC)c2ccccc2C1(C)C
[H]C(=CC([H])=C1N(CC)c2cc(Cl)c(Cl)cc2N1CC)c1n(CC)c2cc(Cl)c(Cl)cc2[n+]1CC
[H]C(=CC([H])=CC([H])=C1N(CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)C(O)=O)C=C([H])C1=[N+](CC)c2ccc3c(cc(cc3c2C1(C)C)S([O-])(=O)=O)S([O-])(=O)=O
[H]C(C=C([H])C1=[N+](CC)c2ccc3c(cc(cc3c2C1(C)C)S([O-])(=O)=O)S([O-])(=O)=O)=CC([H])=C1N(CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)C(O)=O
[H]C(=CC([H])=CC([H])=C1N(CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)C(O)=O)C=C([H])C1=[N+](CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)S([O-])(=O)=O
[H]C(C=C([H])C1=[N+](CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)S([O-])(=O)=O)=CC([H])=C1N(CCCCS([O-])(=O)=O)c2ccc(cc2C1(C)C)C(O)=O
[H]C(=CC([H])=C1C=Cc2ccccc2N1CC)c1ccc2ccccc2[n+]1CC
[H]C(=C1C=CN(CCC[N+](C)(C)C)C=C1)c1oc2ccccc2[n+]1C
[H]C(=C([H])c1oc2ccccc2[n+]1C)C([H])=C1C=CN(CCC[N+](C)(C)C)C=C1
[H]C(=C1C=CN(CCC[N+](C)(C)CCC[N+](C)(C)CCCN2C=CC(C=C2)=C([H])c2oc3ccccc3[n+]2C)C=C1)c1oc2ccccc2[n+]1C
[H]C(=C([H])c1oc2ccccc2[n+]1C)C([H])=C1C=CN(CCC[N+](C)(C)CCC[N+](C)(C)CCCN2C=CC(C=C2)=C([H])C([H])=C([H])c2oc3ccccc3[n+]2C)C=C1
CC[N+]1=C(/C=C/C=C/C=C2\N(C)c3ccc(NC(=O)CI)cc3C2(C)C)C(C)(C)c2c1ccc1c(cc(cc21)S([O-])(=O)=O)S([O-])(=O)=O
CC[N+]1=C(/C=C/C=C/C=C/C=C2\N(C)c3ccc(NC(=O)CI)cc3C2(C)C)C(C)(C)c2c1ccc1c(cc(cc21)S([O-])(=O)=O)S([O-])(=O)=O
CN1c2ccc(NC(=O)CI)cc2C(C)(C)\C1=C\C=C\C=C\C=C\C1=[N+](CCS([O-])(=O)=O)c2ccc3c(cc(cc3c2C1(C)C)S([O-])(=O)=O)S([O-])(=O)=O
[H]C(=C(C)C([H])=C1Sc2ccc3ccccc3c2N1CC)c1sc2ccc3ccccc3c2[n+]1CC
C=12C=CC=CC1C(=CC=[N+]2C)C(=C3N(C=4C(S3)=CC=CC4)C)[H]
[H]C(=C1C=CN(CCC[N+](C)(C)C)c2ccccc12)c1sc2ccccc2[n+]1C
[H]C(=Cc1sc2ccccc2[n+]1C)C([H])=C1C=CN(CCC[N+](C)(C)C)c2ccccc12
[N+]=1(C2=C(C=CC=C2)C(=CC1)C(=C3N(C4=C(S3)C=CC=C4)C)[H])CCC[N+](CCC[N+](CCC[N+]=5C6=C(C=CC=C6)C(=CC5)C(=C7N(C8=C(S7)C=CC=C8)C)[H])(C)C)(C)C
[H]C(=Cc1cc[n+](CCCC(CCCC(CCC[n+]2ccc(C([H])=CC([H])=C3Sc4ccccc4N3C)c3ccccc23)=[N+](C)C)=[N+](C)C)c2ccccc12)C([H])=C1Sc2ccccc2N1C
[H]C(=C1Oc2ccccc2N1C)c1cc[n+](CCC[N+](C)(C)C)c2ccccc12
[H]C(=Cc1oc2ccccc2[n+]1C)C([H])=C1C=CN(CCC[N+](C)(C)C)c2ccccc12
[H]C(=C1Oc2ccccc2N1C)c1cc[n+](CCC[N+](C)(C)CCC[N+](C)(C)CCC[n+]2ccc(C([H])=C3Oc4ccccc4N3C)c3ccccc23)c2ccccc12
[H]C(=CC([H])=C1Oc2ccccc2N1C)c1cc[n+](CCC(CCCC(CC[n+]2ccc(C([H])=CC([H])=C3Oc4ccccc4N3C)c3ccccc23)=[N+](C)C)=[N+](C)C)c2ccccc12
[H]C(=CC([H])=C1Cc2cc(ccc2N1CCS(O)(=O)=O)S(O)(=O)=O)C(C)=C([H])C=C([H])C1=[N+](CCS(O)(=O)=O)c2ccc(cc2C1)S([O-])(=O)=O
[H][C@]12CC[C@]3([H])[C@]([H])(C[C@@H](O)[C@]4(C)[C@]([H])(CC[C@]34O)C3=CC(=O)OC3)[C@@]1(C)CC[C@@H](C2)OCC(=O)NCCNC(=O)CCCCCN1c2ccc(cc2C(C)(C)\C1=C\C=C\C=C\C1N(CC)c2ccc(cc2C1(C)C)S(O)(=O)=O)S(O)(=O)=O
CN1c2ccccc2C(C)(C)\C1=C/C=C/c1cc[n+](CCCS([O-])(=O)=O)c2ccccc12
CCCCCN1C(Oc2ccccc12)=CC=Cc1oc2ccccc2[n+]1CCCCC