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azobenzenes +     
bis(azo) compound +     
perimidines +    
1,3,4,5,7,8-hexahydroxy-9,10-dioxo-9,10-dihydroanthracene-2,6-disulfonic acid 
2,2'-disulfoazobenzene 
2,4-dinitro-1-naphthol 
2,7-dibromo-4-hydroxymercurifluorescein 
2-[4-(dimethylamino)phenyl]azobenzoic acid [2-(1-azepanyl)-2-oxoethyl] ester 
3,3'-diaminobenzidine 
3,4-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid  
3,6-diamino-10-methylacridinium chloride +  
3,7-diamino-5-phenylphenazin-5-ium +  
3-[(4-anilinophenyl)diazenyl]benzene-1-sulfonic acid  
3-methyl-4'-dimethylaminoazobenzene  
4,4'-diaminoazobenzene 
4,5-dihydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonic acid 
4-(2-hydroxy-5-methylphenylazo)acetanilide 
4-(4-nitrophenylazo)aniline 
4-(4-nitrophenylazo)resorcinol 
4-(dimethylamino)azobenzene  
4-(phenylazo)aniline 
4-[(2,4-dimethylphenyl)diazenyl]-3-hydroxynaphthalene-2,7-disulfonic acid 
4-[4-[2-(2,4-dioxo-1H-quinolin-3-ylidene)hydrazinyl]-2-methylphenyl]azo-N,N-dimethylbenzamide 
4-amino-5-hydroxy-3-[(p-nitrophenyl)azo]-6-(phenylazo)-naphthalene-2,7-disulfonate +  
4-aminoazobenzene-3,4'-disulfonic acid 
4-carboxy-4'-sulfoazobenzene 
4-carboxylato-4'-sulfonatoazobenzene 
4-hydroxy-3-[(2-methoxyphenyl)diazenyl]naphthalene-1-sulfonic acid 
4-Hydroxyazobenzene  
5'-phosphopyridoxal-6-azobenzene-2,4-disulfonic acid  
5-acetamido-4-hydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonic acid 
7-hydroxy-8-[(E)-phenyldiazenyl]naphthalene-1,3-disulfonic acid 
7-hydroxy-8-\{[4-(phenyldiazenyl)phenyl]diazenyl\}naphthalene-1,3-disulfonic acid 
acid fuchsin 
acid green 5 
acid red 26 
acid red 29  
acid red 44 
acridine orange  
acridine orange free base  
acridine red 3B 
acridine red 3B free base 
alcian yellow 
alcian yellow cation +  
alizarin cyanin BBS 
alizarin red S 
alkali blue 4B 
alkali Blue G 
alpha-aminoorcein +  
alpha-hydroxyorcein +  
aluminon 
Amido Black 10B 
Amido Black 10B (acid form) 
aniline blue WS 
anthracene blue SWR 
auramine O  
auramine O free base 
aurintricarboxylic acid  
azobenzene +   
azocarmine B 
azocarmine G 
azophloxine 
Azothoate 
azure A 
azure B  
azure C 
basic brown 1 +  
basic fuchsin 
benzo scarlet 4BNS 
benzo scarlet 4BNS free acid 
beta-aminoorceimine +  
beta-aminoorcein +  
beta-hydroxyorcein +  
Biebrich scarlet 
Biebrich scarlet (acid form) 
Bismark brown Y 
brazilein  
brazilin  
brilliant cresyl blue 
brilliant green  
brilliant green cation +   
butanoic acid [2-oxo-2-(4-phenyldiazenylanilino)ethyl] ester 
carminic acid 
CAY10397 
Celestin blue B 
Chrome fast yellow 8GL 
Chrome fast yellow 8GL (acid form) 
chrome violet CG 
chromoxane cyanin R 
chromoxane cyanin R free acid 
Chrysoidine free base 
CI Pigment Red 3 
Citrus Red No.2 
Congo corinth 
Congo corinth (acid form) 
crocin-1  
crystal violet  
Diacetylaminoazotoluene 
diathymosulfone 
Disperse Red 1 
Durazol blue 4R 
Durazol blue 4R (acid form) 
eosin b 
eosin YS dye 
ethyl eosin 
ethyl green 
ethyl violet 
ethyl violet cation +  
etoxazene 
Evans blue 
Evans blue free acid 
fast blue B +  
fast blue salt B 
Fast green FCF 
fast red B 
fast yellow 
flavianic acid 
FluoZin-3 
Gallamin blue 
Gallamin blue(1+) +  
gallein  
gallocyanin 
gallocyanin(1+) +  
gamma-aminoorceimine +  
gamma-aminoorcein +  
gamma-hydroxyorcein +  
Guinee green B 
haematoxylin +  
hematein 
Hoffman's violet 
Hoffman's violet free base 
indigo carmine  
indigo carmine (acid form) 
iodine green 
iodonitrotetrazolium chloride 
lissamine fast red 
lissamine fast red (acid form) 
lissamine fast yellow 
lissamine fast yellow (acid form) 
lissamine flavine FF 
lissamine rhodamine 
Luxol fast blue MBS 
Luxol fast blue MBS (acid form) 
m-azobenzenesulfonic acid 
magenta II +  
magenta II free base 
malachite green 
mauveine 
mauveine A +  
mauveine B +  
mauveine B2 +  
mauveine C +  
merbromin  
metanil yellow 
methyl blue +  
methyl green 
methyl red 
Methyl violet 2B 
Methyl violet 2B free base 
methylene blue  
methylene green 
Milling yellow 3G 
Milling yellow 3G (free acid) 
naphthalene blue black CS 
naphthalene blue black CS (acid form) 
naphthol green B 
naphthol yellow S 
new fuchsin +  
new fuchsin free base 
night blue 
nile blue A 
nile red 
nuclear fast red 
nuclear fast red free acid 
Oil Orange SS 
Oil red O 
olsalazine 
orange G 
orcein 
ortho-Aminoazotoluene  
osmium tetroxide 
p-azobenzenesulfonic acid 
pararosaniline +  
pararosaniline free base  
perimidine +  
phloxine B 
Ponceau S 
Ponceau S (acid form) 
Pontamine sky blue 5B 
Pontamine sky blue 5B (acid form) 
primuline 
primuline (acid form) 
prontosil  
purpurin  
pyronin B 
pyronin B-FeCl3 complex 
pyronin Y 
Reactive red 120 
Reactive Red 6 hapten +  
Reactive Red 6 hapten copper complex 
remazole black-GR 
remazole black-GR (4-) +  
rhodamine B 
rosanilin +  
rosanilin free base 
rose bengal  
safranin O 
salazosulfadimidine 
Sirius red 4B 
Sirius red 4B (acid form) 
Sirius red F3B 
Sirius red F3B (acid form) 
Sirius scarlet GG 
Sirius scarlet GG (acid form) 
Solvent yellow 56 
Sudan black B 
A member of the class of perimidines that is 2,2-dimethyl-2,3-dihydro-1H-perimidine carring a [4-(phenyldiazenyl)naphthalen-1-yl]diazenyl substituent at position 6. A fat-soluble dye predominantly used for demonstrating triglycerides in frozen sections and for staining of protein bound lipids in paraffin sections.
Sudan Brown RR 
Sudan II 
Sudan III  
Sudan IV  
Sudan Red 7B 
sulfachrysoidine 
sulfasalazine  
tartrazine  
thioflavine S 
thioflavine T  
thionine 
tolonium chloride 
trimethyl-[[3-[3-[(trimethylammonio)methyl]phenyl]azophenyl]methyl]ammonium 
trypan blue 
trypan blue sulfonic acid 
victoria blue 4R 
victoria blue B 
victoria blue R 
water blue +  
woodstain scarlet 
Yellow AB 
Yellow OB 

Synonyms
Exact Synonyms: 2,2-dimethyl-6-{[4-(phenyldiazenyl)naphthalen-1-yl]diazenyl}-2,3-dihydro-1H-perimidine
Related Synonyms: 2,3-Dihydro-2,2-dimethyl-6-((4-(phenylazo)-1-naphthalenyl)azo)-1H-pyrimidine ;   C.I. 26150 ;   C.I. Solvent Black 3 ;   Fast Black HB ;   Fat black HB ;   Formula=C29H24N6 ;   InChI=1S/C29H24N6/c1-29(2)30-26-14-8-13-22-25(17-18-27(31-29)28(22)26)35-34-24-16-15-23(20-11-6-7-12-21(20)24)33-32-19-9-4-3-5-10-19/h3-18,30-31H,1-2H3 ;   InChIKey=YCUVUDODLRLVIC-UHFFFAOYSA-N ;   SMILES=C1=C(C2=C(C(=C1)N=NC3=C4C5=C(C=C3)NC(NC5=CC=C4)(C)C)C=CC=C2)N=NC6=CC=CC=C6 ;   Solvent black 3
Xrefs: CAS:4197-25-5 ;   PMID:12530969 ;   PMID:25732579 ;   PMID:26264601 ;   Reaxys:723248 ;   Wikipedia:Sudan_Black_B

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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.