Summer Sale 2026

20-50% Off Secondary Antibodies, Cell Stains, Neuroscience Probes, & More

Use the promo codes below at check out. Discount applies to all sizes and variations for products linked below. This offer is for US customers only and cannot be combined with other offers. The promo codes are valid until August 31st, 2026.

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20% off

Secondary & anti-tag antibodies

CF® dye conjugates, anti-tag, streptavidin

20–30% off

Bioconjugates

Phalloidin, annexin V, dextrans, nucleotides

30–50% off

Fluorescent cellular stains

Nuclear, mitochondrial, membrane dyes

20–30% off

Neuroscience probes & reagents

Nerve terminal dyes, tracers, ion indicators

30% off

Coelenterazine substrates

12 analogs, Aquaphile™ water-soluble formats

20% Off All Secondary & Anti-Tag Antibodies

Wide selection of secondary and anti-tag antibodies
Your choice of more than 20 CF® Dye colors, R-PE, APC, HRP, AP or biotin

Highly cross-adsorbed, F(ab’)2 fragments, and isotype-specific options
Affordable 50 uL sizes available

Promo code SUMMERSALE-20 20% off · expires Aug 31, 2026

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20-30% Off High Quality Bioconjugates

Biotium offers a wide selection of bioconjugates available with our bright and photostable CF® Dyes and other labels. Use promo code SUMMERSALE-20 at checkout. Click here to learn more about our full selection of bioconjugates and potential applications.

Nucleotide Conjugates

dUTP CF® Dye Conjugates

dCTP CF® Dye Conjugates

Cyanine Dye dUTP

5-TAMRA-dUTP, 1 mM Solution (40001)

DEAC-dUTP (40059)

Fluorescein-12-dUTP (40063)

Digoxigenin-dUTP, Alkali Stable (40078)

CF®640R-UTP (40032)

Annexin V Conjugates

Annexin V Conjugates

Annexin V Near IR CF® Dye Conjugates

Annexin V CF® Dye Conjugates, Azide-Free, Lyophilized

Phalloidin Conjugates

View Phalloidin Conjugates Product Page

Streptavidin Conjugates

View Streptavidin Conjugates Product Page

Promo code SUMMERSALE-20 20% off · expires Aug 31, 2026

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Use promo code SUMMERSALE-30 at checkout for a 30% on these select cyclic nucleotide conjugates:

Biotin-cAMP

Biotin-cGMP, Diisopropylethylammonium Salt

Cyanine 644-cAMP

CF® Dye cAMP

Promo code SUMMERSALE-30 30% off · expires Aug 31, 2026

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30-50% Off Fluorescent Cellular Stains

Featuring discounted high quality stains for nucleus, cell membranes, and mitochondria.
Browse our selection of discounted stains below or click here to view our full selection of cell stains by target.

Use promo code SUMMERSALE-50 at checkout for a 50% discount on the following nuclear stains:

Cyanine Nucleic Acid Dyes

Thiazole Green (SYBR® Green I), 10,000X in DMSO (40086)

Thiazole Orange, 10 mM in DMSO (40077)

Thiazole Orange Homodimer (TOTO®-1), 1 mM in DMSO (40079)

Thiazole Red Homodimer (TOTO®-3), 1 mM in DMSO (40080)

Thiazole Red (TO-PRO®-3), 1 mM in DMSO (40087)

TO iodide (TO-PRO®-1), 1 mM in DMSO (40088)

Oxazole Yellow (YO-PRO®-1), 1 mM in DMSO (40089)

Oxazole Blue (PO-PRO™-1), 1 mM in DMSO (40091)

Oxazole Blue Homodimer (POPO™-1), 1 mM in DMSO (40093)

Oxazole Red (YO-PRO®-3), 1 mM in DMSO (40105)

Oxazole Red Homodimer (YOYO®-3), 1 mM in DMSO (40106)

Oxazole Gold (SYBR® Gold), 10,000X in DMSO (40094)

Promo code SUMMERSALE-50 50% off · expires Aug 31, 2026

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Use promo code SUMMERSALE-30 at checkout for a 30% discount on the following mitochondrial and potential-dependent dyes:

TMRE, 2 mM in DMSO (70005)

Rhodamine 123 (70010)

JC-1 (chloride salt) (70011)

Nonyl Acridine Orange (NAO) (70012)

Tetrabromorhodamine 123, bromide (70013)

JC-1 (iodide salt) (70014)

Tetrabromorhodamine 123, bromide (70013)

DiIC1(5) (1,1′-dimethyl-3,3,3′,3′-tetramethylindodicarbocyanine, iodide) (70015)

TMRE (70016)

TMRM (70017)

DASPEI (70018)

Promo code SUMMERSALE-30 30% off · expires Aug 31, 2026

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Use promo code SUMMERSALE-30 at checkout for a 30% discount on the following membrane dyes:

Promo code SUMMERSALE-30 30% off · expires Aug 31, 2026

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20-30% Off Neuroscience Probes & Reagents

Featuring a wide selection discounted bioconjugates, nerve terminal dyes, neuronal tracers, and fluorescent ion indicators. Click here to learn more about our probes and reagents for neuroscience.

Use promo code SUMMERSALE-20 at checkout for a 20% discount on α-Bungarotoxin and CF® Dye Dextran Conjugates

CF® Dye Dextran Conjugates

CF® Dye Dextran 3,500 MW, Anionic and Fixable

CF® Dye Dextran 10,000 MW, Anionic and Fixable

CF® Dye Dextran 40,000 MW, Anionic and Fixable

CF® Dye Dextran 70,000 MW, Anionic and Fixable

CF® Dye Dextran 150,000 MW, Anionic and Fixable

CF® Dye Dextran 250,000 MW, Anionic and Fixable

α-Bungarotoxin Conjugates

View α-Bungarotoxin Conjugates Product Page

Promo code SUMMERSALE-20 20% off · expires Aug 31, 2026

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Use promo code SUMMERSALE-30 at checkout for a 30% discount on the following nerve terminal dyes

Promo code SUMMERSALE-30 30% off · expires Aug 31, 2026

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Use promo code SUMMERSALE-25 at checkout for a 25% discount on the following ion indicator dyes

BAPTA, AM Ester (50000)

BAPTA, Tetracesium Salt (50001)

BAPTA, Tetrapotassium Salt (50002)

BAPTA, Tetrasodium Salt (50003)

5,5′-Dibromo BAPTA, Tetrapotassium Salt (50004)

5,5′-Difluoro BAPTA, AM Ester (50005)

5,5′-Difluoro BAPTA, Tetrapotassium Salt (50006)

5,5′-Dimethyl BAPTA, AM Ester (50007)

5,5′-Dimethyl BAPTA, Tetrapotassium Salt (50008)

Fluo-3, Pentaammonium Salt (50010)

Fluo-3, Pentapotassium Salt (50011)

Fluo-3, Pentasodium Salt (50012)

Fluo-3, AM Ester (50014)

Fluo-3, AM Ester, 1 mM in Anhydrous DMSO (50015)

Fluo-4, pentapotassium salt (50019)

Fluo-4, AM Ester (50018)

Rhod-2, Triammonium salt (50020)

Rhod-2, Tripotassium salt (50021)

Rhod-2, Trisodium Salt (50022)

Rhod-2, AM Ester (50024)

Rhod-590, Tripotassium Salt (50026)

Fura-2, AM Ester, 1 mM Solution (50029)

Fura-2, Pentaammonium Salt (50030)

Fura-2, Pentapotassium Salt (50031)

Fura-2, Pentasodium Salt (50032)

Fura-2, AM Ester (50034)

Furaptra (Mag-Fura-2), Tetrapotassium Salt (50035)

Furaptra (Mag-Fura-2), Tetrasodium Salt (50036)

Furaptra (Mag-Fura-2), AM Ester (50038)

Indo-1, Pentaammonium Salt (50040)

Indo-1, Pentapotassium Salt (50041)

Indo-1, Pentasodium Salt (50042)

Indo-1, AM Ester (50044)

Mag-Fluo-4, Tetrapotassium Salt (50047)

BCECF, AM Ester, 1 mg/mL in Anhydrous DMSO (51009)

BCECF, Free Acid (51010)

BCECF, AM Ester (51012)

5-(and-6)-Carboxyfluorescein (51013)

5-(and 6)-CFDA (51014)

5-(and-6)-Carboxy-2′,7′- dichlorofluorescein (51015)

5-(and 6)-Carboxy-2′,7′- dichlorofluorescein diacetate (51016)

5-Carboxy-2′,7′-dichlorofluorescein (single isomer) (51017)

5-CFDA (5-Carboxyfluorescein diacetate, single isomer) (51018)

5-FAM (51019)

6-FAM (51020)

6-CFDA (6-Carboxyfluorescein diacetate, single isomer) (51021)

Flubida-2 (51022)

5-Carboxy-2′,7′-dichlorosulfonefluorescein (51023)

Flubi-2 (51024)

SPQ (52010)

MQAE (52011)

Zinquin ethyl ester (52020)

Zinquin free acid (52022)

Promo code SUMMERSALE-25 25% off · expires Aug 31, 2026

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30% Off Coelenterazine Luciferase Substrates

Featuring water soluble Aquaphile™ Coelenterazines and 12 different analogs.

Promo code SUMMERSALE-30 30% off · expires Aug 31, 2026

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Coelenterazine Products

Product	Catalog Number	MW	Format
Coelenterazine Sampler Kit	10123	---	25 ug each of nine coelenterazine analogs: native, cp, f, fcp, h, hcp, i, ip and n
Aquaphile™ Coelenterazine (native)	10126	423.5	Yellow solid soluble in water or PBS buffer
Aquaphile™ Coelenterazine h	10127	407.5	Yellow solid soluble in water or PBS buffer
Coelenterazine (native)	10110	423.5	Yellow solid soluble in MeOH or EtOH
Coelenterazine h	10111	407.5	Yellow solid soluble in MeOH or EtOH
Coelenterazine cp	10112	415.5	Yellow solid soluble in MeOH or EtOH
Coelenterazine hcp	10113	399.5	Yellow solid soluble in MeOH or EtOH
Coelenterazine f	10114	425.5	Yellow solid soluble in MeOH or EtOH
Coelenterazine n	10115	457.5	Yellow solid soluble in MeOH or EtOH
Coelenterazine ip	10116	389.5	Yellow solid soluble in MeOH or EtOH
Coelenterazine fcp	10117	417.5	Yellow solid soluble in MeOH
Coelenterazine i	10121	533.4	Yellow solid soluble in MeOH or EtOH
Coelenterazine e	10124	449.5	Dark brown solid soluble in MeOH and EtOH
Coelenterazine 400a (DeepBlueC™ )	10125	391.5	Off-white to pinkish solid soluble in EtOH
Methyl Coelenterazine	10122	331.4	Yellow solid soluble in MeOH and EtOH