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N-(4-Aminobutyl)-N-ethylisoluminol, >=90%

N-(4-Aminobutyl)-N-ethylisoluminol, >=90%

Descriptions

Features and Benefits

Efficient chemiluminescent NH₂-coupling reagent for detection of a wide variety of proteins down to the picomole range.

Other Notes

Reportedly, the use of this material in chemiluminescent assays has distinct advantages over conventional radioimmunoassay.

Packaging

25, 250 mg in glass bottle

Specifications

No detailed specifications are available for this product.

Downloads

There are no downloads for this product.

Code	Description	Quality Level	mp	InChI key	InChI	Manufacturer	Solubility	Form	Assay	Price
3578043	N-(4-Aminobutyl)-N-ethylisoluminol, >=90%	200, 100	259-260 °C (lit.)	LEOJISUPFSWNMA-UHFFFAOYSA-N	1S/C14H20N4O2/c1-2-18(8-4-3-7-15)10-5-6-11-12(9-10)14(20)17-16-13(11)19/h5-6,9H,2-4,7-8,15H2,1H3,(H,16,19)(H,17,20)	SIGMA-ALDRICH	glacial acetic acid: 50 mg/mL, clear, colorless to yellow	powder	≥90%	You need to be logged in to see prices.
3578044	N-(4-Aminobutyl)-N-ethylisoluminol, >=90%	200, 100	259-260 °C (lit.)	LEOJISUPFSWNMA-UHFFFAOYSA-N	1S/C14H20N4O2/c1-2-18(8-4-3-7-15)10-5-6-11-12(9-10)14(20)17-16-13(11)19/h5-6,9H,2-4,7-8,15H2,1H3,(H,16,19)(H,17,20)	SIGMA-ALDRICH	glacial acetic acid: 50 mg/mL, clear, colorless to yellow	powder	≥90%	You need to be logged in to see prices.

You need to be logged in to see prices.

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Browse By

beta-Hydroxypyruvic acid, >=95.0% (dry substance, T)
D-(-)-Citramalic acid lithium salt, >=95.0% (GC)
Guanosine 5-diphospho-alpha-D-mannose disodium salt, >=95.0% (HPLC)
5-Bromo-4-chloro-3-indolyl alpha-D-galactopyranoside, >=98.0% (HPLC)
Kaempferol 7-O-beta -D-glucopyranoside, >=90.0% (HPLC)
L-2-Phosphoglyceric acid disodium salt hydrate, >=80% (CE)
Lipase Substrate, >=95% (HPLC)
(+/-)-Sodium 2,3-dihydroxyisovalerate hydrate, >=95% (CE)
p-Nitrophenyl-beta-D-ribofuranoside, >=98.0% (HPLC)
S-(5-Adenosyl)-3-thiopropylamine, >=98.0% (HPLC)
5-Bromo-4-chloro-3-indolyl beta-D-ribofuranoside, >=98.0% (HPLC)
4-Hydroxy-L-isoleucine, >=98.0% (TLC)
Chlorophenol Red-beta-D-galactopyranoside, >=90% (HPLC)
4-Nitrophenyl dodecanoate, >=98.0% (GC)
Lipase Substrate, for the titrimetric determination of enzyme activity
4-O-Caffeoylquinic acid, >=98.0%
4-O-Methyl-D-glucurono-D-xylan dyed with Remazol brilliant blue R, dye basis, 15% dye basis
4-Methylumbelliferyl N-acetyl-beta-D-glucosaminide, suitable for fluorescence, >=99.0% (TLC)
4-Methylumbelliferyl-beta-D-glucuronide hydrate, suitable for fluorescence, >=99.0% (HPLC)
4-Nitrophenyl phosphate disodium salt hexahydrate, for enzyme immunoassay, >=99.0% (enzymatic)
2-Phosphoglycolic acid lithium salt; greater than =95.0% (HPLC)
L-(-)-Glyceraldehyde, >=95.0% (HPLC)
4-Nitrophenyl beta-D-glucuronide, >=99.0% (TLC)
4-Nitrophenyl alpha-D-maltohexaoside, >=98.0% (HPLC)
4-Nitrophenyl phosphate bis(tris) salt, for the determination of phosphatase, >=97.0% (enzymatic)
5-Bromo-4-chloro-3-indolyl alpha-D-glucopyranoside, >=98.0% (HPLC)
4-Methylumbelliferyl oleate, suitable for fluorescence, >=95% (HPCE)
Salvinorin B, >=93.0% (HPLC)
L-Ribulose, >=90% (HPLC)
D-Ribulose solution, approx.1 M in H2O, >=97.0% (HPLC)
Peptidoglycan from Staphylococcus aureus, cell wall component
Phenyl-beta-D-glucuronide, >=99.0% (HPLC)
(+/-)-Mevalonic acid 5-phosphate trilithium salt hydrate, 95% (TLC)
3,3,5,5-Tetramethylbenzidine, >=98.0% (NT)
3,3,5,5-Tetramethylbenzidine dihydrochloride hydrate, >=98.0% (calc. on dry substance, AT)
Tetrazolium Blue Chloride, indicator for germination, for microbiology, >=90% (T)
MTT Formazan, MTT reduction end product
4-Phenylazobenzyloxycarbonyl-Pro-Leu-Gly-Pro-D-Arg trifluoroacetate salt, >=95% (HPLC)
L-alpha-Hydroxyglutaric acid disodium salt, >=98.0% (GC)
Azo-Galactomannan from carob, galactomannanase substrate
2-Chloro-4-nitrophenyl-alpha-D-maltotrioside, >=96.0% (HPLC)
Neochlorogenic acid, from Lonicera japonica, >=98.0% (HPLC)
Adenosine 3-phosphate 5-phosphosulfate triethylammonium salt, >=95.0% (HPLC)
DL-alpha-Hydroxyglutaric acid disodium salt, >=98.0% (GC)
Z-Gly-Pro-4-nitroanilide, >=99.0% (TLC)
6-Chloro-3-indolyl alpha-D-galactopyranoside, >=98.0% (HPLC)
3-Dehydroquinic acid potassium salt, >=97.0% (TLC)
N-(4-Aminobutyl)-N-ethylisoluminol, >=90%
Lithium potassium acetyl phosphate, high-energy phosphate donor
2,2-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt, >=98% (HPLC)
L-Arginine-7-amido-4-methylcoumarin hydrochloride, cathepsin H substrate
Azoalbumin, protease substrate
Azocasein, protease substrate
Arg-Arg beta-naphthylamide trihydrochloride,
5-Aminosalicylic acid, >=99%
Alizarin-3-methyliminodiacetic acid,
L-Alanine 7-amido-4-methylcoumarin trifluoroacetate salt, aminopeptidase substrate
Azo dye-impregnated collagen, collagenase substrate
L-Arginine p-nitroanilide dihydrochloride, protease substrate
Luminol sodium salt,
Acetylthiocholine chloride, >=99% (TLC), powder
Acetylthiocholine iodide, >=98% (TLC), powder or crystals
3-Amino-9-ethylcarbazole, >=95%, powder
O-Acetyl-L-carnitine hydrochloride, >=99% (titration), powder
3-Amino-9-ethylcarbazole, tablet
Acetyl-Lys-D-Ala-D-Ala, >=95% (HPLC)
4-Aminophthalhydrazide,
Luminol, >=97% (HPLC)
L-Alanine 4-nitroanilide hydrochloride, protease substrate
Albumin-fluorescein isothiocyanate conjugate, albumin bovine
7-Amino-4-methylcoumarin, Chromophore for substrates
2,2-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt, tablet, 10 mg substrate per t
5-Bromo-4-chloro-3-indolyl phosphate p-toluidine salt, tablet
5-Bromo-4-chloro-3-indolyl sulfate potassium salt, sulfatase substrate
Resorufin benzyl ether, CYP450 substrate
N-Benzoyl-Pro-Phe-Arg-p-nitroanilide hydrochloride, protease substrate
Nalpha-Benzoyl-L-arginine 4-nitroanilide hydrochloride, >=99% (TLC), suitable for substrate for tryp
Nalpha-Benzoyl-L-arginine, >98% (TLC)
5-Bromo-4-chloro-3-indolyl beta-D-galactopyranoside, >=98%, powder
5-Bromo-4-chloro-3-indolyl acetate, esterase substrate
5-Bromo-3-indolyl beta-D-galactopyranoside, >=98%
Nalpha-Benzoyl-L-arginine ethyl ester hydrochloride, trypsin substrate
5-Bromo-4-chloro-3-indolyl beta-D-glucopyranoside, >=97%
Boc-Leu-Ser-Thr-Arg-7-amido-4-methylcoumarin, protein C substrate
5-Bromo-4-chloro-3-indolyl alpha-D-N-acetylneuraminic acid sodium salt, >=90%
Nalpha-Benzoyl-DL-arginine beta-naphthylamide hydrochloride, trypsin substrate
Nalpha-Benzoyl-DL-arginine 4-nitroanilide hydrochloride, >=98%
5-Bromo-4-chloro-3-indolyl beta-D-glucuronide sodium salt, >=98%
SIGMAFAST BCIP/NBT, tablet
5-Bromo-4-chloro-3-indolyl beta-D-galactopyranoside, tablet
5-Bromo-4-chloro-3-indolyl phosphate disodium salt, >=98% (HPLC)
5-Bromo-4-chloro-3-indolyl phosphate p-toluidine salt, BioReagent, for molecular biology, powder, >=
Nalpha-Benzoyl-L-arginine-7-amido-4-methylcoumarin hydrochloride, protease substrate
N-Benzoyl-Phe-Val-Arg-p-nitroanilide hydrochloride, protease substrate
6-Bromo-2-naphthyl beta-D-glucopyranoside, >=99% (TLC)
5-Bromo-4-chloro-3-indolyl phosphate p-toluidine salt, >=99% (HPLC)
5-Bromo-4-chloro-3-indolyl beta-D-galactopyranoside, >=98%
5-Bromo-4-chloro-3-indolyl beta-D-fucopyranoside, >=98% (HPLC)
Casein fluorescein isothiocyanate from bovine milk, Type III, essentially salt-free, lyophilized pow
Cellulose Azure, cellulase substrate
Chitin azure, chitinase substrate
Casein fluorescein isothiocyanate from bovine milk, Type II, essentially salt-free, lyophilized powd
beta-Chloro-D-alanine hydrochloride,
4-Chloro-1-naphthol, tablet
4-Chloro-1-naphthol, crystalline
beta-Chloro-L-alanine hydrochloride, Alanine aminotransferase inhibitor
Z-Phe-Arg 7-amido-4-methylcoumarin hydrochloride, kallikrein substrate
Chemiluminescent Peroxidase Substrate-3
SIGMAFAST DAB with Metal Enhancer, tablet
3-(Dimethylamino)benzoic acid, >=97% (HPLC)
1-Fluoro-2,4-dinitrobenzene, >=99%
SIGMAFAST 3,3-Diaminobenzidine tablets, tablet, To prepare 5 mL
SIGMAFAST 3,3-Diaminobenzidine tablets, tablet, To prepare 15 mL
3,3-Diaminobenzidine tetrahydrochloride, tablet, 10 mg substrate per tablet
o-Dianisidine, peroxidase substrate
o-Dianisidine dihydrochloride, tablet, 10 mg substrate per tablet
SIGMAFAST Fast Red TR/Naphthol AS-MX Tablets, tablet, To prepare 10 mL
SIGMAFAST Fast Red TR/Naphthol AS-MX Tablets, tablet, To prepare 1 mL
5-Fluoroorotic acid hydrate, >=98%
Farnesyl pyrophosphate ammonium salt, methanol:ammonia solution, >=95% (TLC)
Fast Green FCF, Dye content >=85 %
Fluorescamine, >=98% (TLC), powder, used for detection of primary amines
L-Glutamic acid gamma-(4-methoxy-beta-naphthylamide),
Gly-Phe p-nitroanilide, cathepsin c substrate
Gly-Pro p-nitroanilide hydrochloride, >=99% (TLC)
L-Glutamic acid gamma-(4-nitroanilide), gamma-glutamyl transpeptidase substrate
N-Glutaryl-L-phenylalanine p-nitroanilide, protease substrate
Gly-Pro p-nitroanilide p-toluenesulfonate salt, approx.99% (TLC)
L-Glutamic acid gamma-(beta-naphthylamide),
Glutaryl-Ala-Ala-Phe-4-methoxy-beta-naphthylamide, protease substrate
Guanosine 5-diphospho-beta-L-fucose sodium salt, >=85%
L-alpha-Glycerophosphorylcholine, from soybean, >=98%, powder
L-Glutamic acid gamma-(p-nitroanilide) hydrochloride, gamma-glutamyl transpeptidase substrate
Geranyl pyrophosphate ammonium salt, 1 mg/mL in methanol (:aqueous 10 mM NH4OH (7:3)), >=95% (TLC)
Gly-Pro 4-methoxy-beta-naphthylamide, dipeptidylpeptidase?ßIV substrate
3-Hydroxy-DL-kynurenine,
Hippuryl-Arg, carboxypeptidase substrate
Hide-Remazol Brilliant Blue R, protease substrate
DL-beta-Hydroxybutyric acid sodium salt, approx.98%
Hippuryl-L-phenylalanine,
4-Hydroxybenzhydrazide, >=97%
Indoxyl phosphate disodium salt, crystalline
Idebenone, >=98% (HPLC)
Iodonitrotetrazolium violet-formazan, crystalline
alpha-Ketoglutaric acid, BioReagent, suitable for cell culture, suitable for insect cell culture
alpha-Ketoglutaric acid, >=98.5% (NaOH, titration)
alpha-Ketoglutaric acid sodium salt, >=98% (enzymatic)
alpha-Ketoglutaric acid potassium salt, >=98% (enzymatic)
alpha-Ketoglutaric acid sodium salt, BioUltra
Kynuramine dihydrobromide, crystalline
L-Leucine beta-naphthylamide hydrochloride, leucine aminopeptidase substrate
L-Leucine beta-naphthylamide,
L-Leucine-7-amido-4-methylcoumarin hydrochloride,
L-Leucine p-nitroanilide hydrochloride, >=98% (TLC)
D-Luciferin, synthetic, BioXtra, >=99% (HPLC)
D-Luciferin sodium salt, lyophilized powder, synthetic
L-Leucine-p-nitroanilide, leucine aminopeptidase substrate
D-Luciferin, synthetic
5-Methyltetrahydrofolic acid disodium salt, >=88% (UV-vis)
Methylglyoxal solution, approx. 40% in H2O
4-Methylumbelliferyl beta-D-mannopyranoside, >=98% (TLC)
4-Methylumbelliferone sodium salt, >=98% (HPLC), crystalline
4-Methylumbelliferyl beta-D-galactopyranoside, >=99% (TLC)
4-Methylumbelliferyl N-acetyl-beta-D-glucosaminide, beta-N-acetylhexosaminidase substrate
4-Methylumbelliferyl beta-D-lactopyranoside, beta-galactosidase substrate
4-Methylumbelliferyl alpha-L-arabinopyranoside, >=99% (HPLC)
4-Methylumbelliferyl beta-D-glucopyranoside, beta-glucosidase substraTE
4-Methylumbelliferyl alpha-D-mannopyranoside, >=97% (HPLC)
4-Methylumbelliferyl p-trimethylammoniocinnamate chloride, powder
N-Methoxysuccinyl-Ala-Ala-Pro-Val p-nitroanilide, elastase substrate
1-Methylhistamine dihydrochloride, >=98% (TLC), powder
4-Methylumbelliferyl beta-D-N,N,N-triacetylchitotrioside, fluorogenic glycanase substrate
4-Methylumbelliferyl beta-D-cellobioside, glucanase substrate
4-Methylumbelliferyl-beta-D-xylopyranoside, beta-xylosidase substrate
4-Methylumbelliferyl sulfate potassium salt, sulfatase substrate
4-Methylumbelliferyl alpha-D-galactopyranoside, >=98% (TLC)
4-Methylumbelliferyl phosphate disodium salt, phosphatase substrate
4-Methylumbelliferyl alpha-L-fucopyranoside, >=97% (TLC)
2-(4-Methylumbelliferyl)-alpha-D-N-acetylneuraminic acid sodium salt hydrate, >=95% (HPLC)
4-Methylumbelliferyl phosphate, phosphatase substrate
4-Methylumbelliferyl N-acetyl-beta-D-galactosaminide, >=98% (HPLC)
4-Methylumbelliferyl beta-D-N,N-diacetylchitobioside hydrate, >=98% (TLC)
4-Methylumbelliferyl alpha-D-glucopyranoside, alpha-glucosidase substrate
N-Methoxysuccinyl-Ala-Ala-Pro-Val-7-amido-4-methylcoumarin, elastase substrate
4-Nitrophenyl decanoate, lipase substrate
Naphthol AS-D chloroacetate, esterase substrate
4-Nitrophenyl alpha-D-galactopyranoside, alpha-galactosidase substrate
4-Nitrophenyl beta-D-galacto?ípyran?íoside, (enzymatic), >=98% (enzymatic)
4-Nitrophenyl beta-D-mannopyranoside, >=98%
4-Nitrophenyl alpha-D-glucopyranoside, >=99%
2-O-(p-Nitrophenyl)-alpha-D-N-acetylneuraminic acid, >=95%
4-Nitrophenyl beta-D-lactopyranoside, powder
Naphthol AS-BI beta-D-glucuronide, beta-glucuronidase substrate
SIGMAFAST p-Nitrophenyl phosphate Tablets, tablet, To prepare 5 mL
4-Nitrophenyl alpha-D-xylopyranoside, alpha-xylosidase substrate
4-Nitrophenyl alpha-D-mannopyranoside, alpha-mannosidase substrate
4-Nitrophenyl beta-D-xylopyranoside, >=98%
Naphthol AS-BI phosphate disodium salt hydrate, >=99.0% (HPLC)
4-Nitrophenyl phosphate disodium salt hexahydrate, tablet
4-Nitrophenyl palmitate, lipase substrate
SIGMAFAST p-Nitrophenyl phosphate Tablets, tablet, To prepare 20 mL
Bis(p-nitrophenyl) phosphate sodium salt, >=99% (TLC)
p-Nitrophenyl galacto-N-bioside, >=98%
4-Nitrophenyl phosphate bis(cyclohexylammonium) salt, phosphatase substrate
4-Nitrophenyl phosphate di(tris) salt, phosphatase substrate
4-Nitrophenyl beta-D-fuco?ípyran?íoside, >=98% (TLC)
4-Nitrophenyl alpha-L-fuco?ípyran?íoside, >=98% (TLC)
4-Nitrophenyl alpha-L-arabinofuranoside, >=98% (TLC)
Potassium 4-nitrophenyl sulfate, sulfatase substrate
Naphthol AS-BI N-acetyl-beta-D-glucosaminide, beta-hexosaminidase substrate
4-Nitrophenyl N-acetyl-alpha-D-galactosaminide, N-acetyl-alpha-D-galactosaminidase substrate
4-Nitrophenyl valerate, liquid
2-Nitrophenyl beta-D-cellobioside, butyrylcholinesterase inhibitor
Naphthol AS-MX phosphate, powder, >=99% (HPLC)
4-Nitrophenyl beta-D-cellobioside, >=98% (TLC)
Naphthol AS-TR phosphate disodium salt, >=99% (HPLC), Bulk package
4-Nitrophenyl N,N-diacetyl-beta-D-chitobioside, >=99% (TLC)
4-Nitrophenyl beta-D-glucopyranoside, >=98% (TLC)
1-Naphthyl phosphate disodium salt, phosphatase substrate
2-Naphthyl phosphate sodium salt,
4-Nitrophenyl alpha-L-rhamnopyranoside, powder
1-Naphthyl butyrate, esterase substrate
4-Nitrophenyl 4-guanidinobenzoate hydrochloride, protease inhibitor and substrate
2-Nitrophenyl beta-D-glucopyranoside, powder
4-Nitrophenyl acetate, esterase substrate
P-nitrophenyl acetate
4-Nitrophenyl N-acetyl-alpha-D-glucosaminide, >=98%
6-Nitro-3-(phenylacetamido)benzoic acid, >=98%
4-Nitrophenyl N-acetyl-beta-D-galactosaminide, >=98%
4-Nitrophenyl N-acetyl-beta-D-glucosaminide, >=99% (TLC)
4-Nitrophenyl butyrate, >=98%
Oxaloacetic acid, >=97%
Phenolphthalein beta-D-glucuronide sodium salt, beta-glucuronidase substrate
Phosphocholine chloride calcium salt tetrahydrate, Sigma Grade
Phenolphthalein beta-D-glucuronide, beta-glucuronidase substrate
o-Phenylenediamine dihydrochloride, tablet, 60 mg substrate per tablet
pGlu-Phe-Leu p-nitroanilide, protease substrate
o-Phenylenediamine dihydrochloride, tablet, 5 mg substrate per tablet
Phe-Arg beta-naphthylamide dihydrochloride, cathepsin substrate
o-Phenylenediamine dihydrochloride, tablet, 15 mg substrate per tablet
Phosphatase substrate
Phosphatase substrate, powder
o-Phenylenediamine, tablet, 20 mg substrate per tablet
Phenolphthalein monophosphate bis(cyclohexylammonium) salt, powder, >=85% (TLC)
Phosphatase substrate, 100 mg capsules
o-Phenylenediamine dihydrochloride, tablet, 1 mg substrate per tablet
o-Phenylenediamine dihydrochloride, tablet, 2 mg substrate per tablet
Phospho(enol)pyruvic acid trisodium salt hydrate, >=97% (enzymatic)
Phospho(enol)pyruvic acid monopotassium salt, >=97% (enzymatic)
Phospho(enol)pyruvic acid tri(cyclohexylammonium) salt, >=98% (enzymatic)
o-Phenylenediamine dihydrochloride, tablet, 20 mg substrate per tablet
Phosphocreatine disodium salt hydrate, >=97%
o-Phenylenediamine dihydrochloride, tablet, 10 mg substrate per tablet
o-Phenylenediamine dihydrochloride, tablet, 30 mg substrate per tablet
o-Phenylenediamine dihydrochloride, tablet, 4 mg substrate per tablet
o-Phenylenediamine dihydrochloride, tablet, 3 mg substrate per tablet
SIGMAFAST OPD, tablet
RNase B Glycoprotein Standard from bovine pancreas, Proteomics Grade
Resorufin beta-D-glucuronide sodium salt, >=90%
Resorufin beta-D-galactopyranoside, approx.95%
N-Succinyl-Ala-Phe-Lys 7-amido-4-methylcoumarin acetate salt,
Phosphatase substrate, 5 mg tablets
N-Succinyl-Leu-Tyr-7-amido-4-methylcoumarin, calpain substrate
N-Succinyl-Gly-Gly-Phe-p-nitroanilide, protease substrate
N-Succinyl-L-phenylalanine-p-nitroanilide, protease substrate
N-Succinyl-Ala-Ala-Ala-p-nitroanilide, elastase substrate
Ser-Tyr beta-naphthylamide, powder
Starch Azure, Potato starch covalently linked with Remazol Brilliant Blue R
Syringaldazine, indicator for laccase and peroxidase activity
N-Succinyl-Ala-Ala-Pro-Leu p-nitroanilide, protease substrate
N-Succinyl-Ala-Ala-Phe-7-amido-4-methylcoumarin, protease substrate
Sar-Pro-Arg p-nitroanilide dihydrochloride, thrombin substrate
N-Succinyl-Ala-Ala-Pro-Phe-7-amido-4-methylcoumarin, Leucine aminopeptidase substrate
3,3,5,5-Tetramethylbenzidine (TMB) Liquid Substrate System for ELISA, peroxidase substrate
L-Tyrosine 7-amido-4-methylcoumarin,
3,3,5,5-Tetramethylbenzidine, >=98% (TLC)
3,3,5,5-Tetramethylbenzidine Liquid Substrate, Slow Kinetic Form, for ELISA, peroxidase substrate
3, 3,5 ,5-Tetramethylbenzidine Liquid Substrate, Supersensitive, for ELISA, ready to use solution
Thymidine 5-monophosphate p-nitrophenyl ester sodium salt, >=98% (HPLC)
3,3,5,5-Tetramethylbenzidine, tablet, 1 mg substrate per tablet
N-(p-Tosyl)-Gly-Pro-Lys 4-nitroanilide acetate salt, plasmin substrate
3,3,5,5-Tetramethylbenzidine (TMB) Liquid Substrate System, peroxidase substrate
3,3,5,5-Tetramethylbenzidine dihydrochloride hydrate, powder, >=98%
TMB Enhanced One Component HRP Membrane Substrate,
D-Val-Leu-Lys 4-nitroanilide dihydrochloride, plasmin substrate
D-Val-Leu-Lys p-nitroanilide dihydrochloride, plasmin substrate
Hematoxylin,

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