TO-TAP-1, green fluorescent nucleic acid stain
Delivery options for stock items to
United States of America (USA) , ZIP
Items in stock will be shipped on
09/10/2025
Free express shipping from
$400 !
Add products for
to your cart and get free express shipping to
United States of America (USA) , ZIP
.
Free express shipping from
$400 !
Your cart total is
$0 , and your order qualifies for free express shipping to United States of America (USA) , ZIP
.
Found better price?
Let us know
and we will propose the way forward!
TO-TAP-1 (Thiazole Orange Monomer, also known as TO-PRO® -1) is a green fluorescent carbocyanine monomeric dye. TO-TAP-1 is a cell-impermeant nucleic acid stain that is nonfluorescent in the absence of nucleic acids but exhibits a multiple fluorescence enhancement upon binding to dsDNA.
The bright fluorescence signal and low background make TO-TAP-1 ideal for staining nucleic acids on microarrays, as well as for nuclear and chromosome counterstaining in multicolor fluorescence labeling experiments. TO-TAP-1 is non-cytotoxic and may be used for long-term monitoring of cell viability and dead cell detection in culture.
Absorption and emission spectra of TO-TAP-1 (DNA–dye complex)
Customers also purchased with this product
←
Pyrene is a polyaromatic hydrocarbon containing four fused rings. This reagent contains a …
50 mg – $ 50.00 100 mg – $ 64.00
Add to cart
Azide of green-yellow emitting HEX dye for conjugation with oligonucleotides via [3+2]-dip…
1 mg – $ 110.00 5 mg – $ 165.00 10 mg – $ 210.00 25 mg – $ 285.00 50 mg – $ 495.00 100 mg – $ 880.00
Add to cart
Cyanine3 dibenzocyclooctyne (DBCO, or ADIBO) is a cycloalkyne dye derivative for copper-fr…
5 mg – $ 260.00 25 mg – $ 510.00 50 mg – $ 895.00 100 mg – $ 1490.00
Add to cart
Azide derivative of Cyanine3B fluorescent dye for сlick сhemistry.…
1 mg – $ 140.00 5 mg – $ 340.00 25 mg – $ 990.00 50 mg – $ 1690.00 100 mg – $ 3100.00
Add to cart
A dye with a dibenzocyclooctyne substituting group for the ROX channel.…
1 mg – $ 125.00 5 mg – $ 260.00 25 mg – $ 510.00 50 mg – $ 895.00 100 mg – $ 1490.00
Add to cart
Сell-permeant, cationic, orange-fluorescent dye for staining active mitochondria in living…
500 ug – $ 125.00 50 ug – $ 15.00
Add to cart
Azide derivative of AMCA fluorescent dye for сlick сhemistry. AMCA is one of the brightest…
100 mg – $ 1050.00 1 mg – $ 60.00 25 mg – $ 540.00 50 mg – $ 885.00 5 mg – $ 110.00
Add to cart
Cyanine3 hydrazide is a carbonyl-reactive dye for Cy3 channel.…
1 mg – $ 125.00 5 mg – $ 260.00 25 mg – $ 510.00 50 mg – $ 895.00 100 mg – $ 1490.00
Add to cart
BDP 558/568 is a borondipyrromethene dye for Cyanine3-channel. This product is a terminal …
1 mg – $ 125.00 5 mg – $ 260.00 10 mg – $ 325.00 25 mg – $ 510.00 50 mg – $ 895.00 100 mg – $ 1490.00
Add to cart
6-FAM-uridine triphosphate for non-radioactive enzymatic RNA labeling during in vitro tran…
1 umol – $ 910.00 250 nmol – $ 325.00 500 nmol – $ 500.00 50 nmol – $ 115.00
Add to cart
Cyanine3 alkyne is a fluorescent dye alkyne for сlick сhemistry.…
1 mg – $ 125.00 5 mg – $ 260.00 10 mg – $ 325.00 25 mg – $ 510.00 50 mg – $ 895.00 100 mg – $ 1490.00
Add to cart
BDP TR is a borondipyrromethene fluorophore for the ROX channel. The dye produces bright f…
1 mg – $ 110.00 5 mg – $ 290.00 25 mg – $ 690.00 50 mg – $ 1270.00 100 mg – $ 1990.00
Add to cart
→
General properties
Appearance:
orange solution
Molecular weight:
645.39
CAS number:
157199-59-2
Molecular formula:
C24 H29 I2 N3 S
IUPAC name:
Quinolinium, 4-[(3-methyl-2(3H)-benzothiazolylidene)methyl]-1-[3-(trimethylammonio)propyl]-, diiodide
Quality control:
NMR 1 H and HPLC-MS (95+%)
Storage conditions:
24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Desiccate.
MSDS:
Download
Product specifications
Spectral properties
Excitation/absorption maximum, nm:
513
Emission maximum, nm:
533
TO-PRO® is the trademark of Molecular Probes.
Product is offered and sold for research purposes only. Product is not tested for safety and efficacy in food, drug, medical device, cosmetic, no express or implied authorization to use for any other purpose, including, without limitation, in vitro diagnostic purposes, for humans or animals or for commercial purposes.
The count of items is incorrect.