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FM4-64

CAS No.
162112-35-8
Chemical Name:
FM4-64
Synonyms
FMreg;FM4-64;FM®NeurotransRed;Neurodye GH4-64;ViVidFluor Neuro Red;SynaptoRed? C2;4-64 is TM of Molecular Probes;SynaptoRed? Reagent;FM4-64 IS TM OF MOLECULAR PROBES
CBNumber:
CB6502122
Molecular Formula:
C30H45BrN3+
Molecular Weight:
527.61
MDL Number:
MFCD00467819
MOL File:
162112-35-8.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-07-17 09:03:53

FM4-64 Properties

Melting point >200℃
storage temp. −20°C
solubility DMSO: soluble10mg/mL
form powder
color deep purple
Appearance dark powder
Water Solubility water: 10mg/mL
DMSO: soluble
methanol: soluble
λmax 505nm
Biological Applications Detecting FRET in cells; monitoring fast neuronal activity and signaling; quantifying plasma membrane expression; cytotoxicity assay; membrane fusion assay; probe for endocytosis; probe for exocytosis
Major Application diagnostic assay manufacturing
hematology
histology
InChIKey HMPYRCUBZVFZMV-UHFFFAOYSA-M
SMILES N(C1C=CC(C=CC=CC=CC2=CC=[N+](CCC[N+](CC)(CC)CC)C=C2)=CC=1)(CC)CC.[Br-]
UNSPSC Code 12171500
NACRES NA.47

SAFETY

Risk and Safety Statements

PPE Eyeshields, Gloves, type N95 (US)
Safety Statements  22-24/25
WGK Germany  3
Storage Class 11 - Combustible Solids

FM4-64 price More Price(11)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich S6689 SynaptoRed? C2 ≥95% (HPLC), solid 162112-35-8 5mg $837 2026-04-30 Buy
ChemScene CS-0027947 FM4-64 99.94% 162112-35-8 1mg $357 2026-06-04 Buy
ChemScene CS-0027947 FM4-64 99.94% 162112-35-8 5mg $791 2026-06-04 Buy
ChemScene CS-0027947 FM4-64 99.94% 162112-35-8 10mg $1267 2026-06-04 Buy
ApexBio Technology B7754 SynaptoRedTM C2 162112-35-8 1mg $464 2026-05-06 Buy
Product number Packaging Price Buy
S6689 5mg $837 Buy
CS-0027947 1mg $357 Buy
CS-0027947 5mg $791 Buy
CS-0027947 10mg $1267 Buy
B7754 1mg $464 Buy

FM4-64 Chemical Properties, Uses, Production

Description

SynaptoProbe® Red is an analog of FM®4-64, a widely used red fluorescent dye for studying synaptic activity in the synapses or neuromuscular junctions by staining synaptic vesicles.


This water-soluble and non-toxic to cells dye is nonfluorescent in an aqueous medium but becomes highly fluorescent after embedding into the outer leaflet of the cell membrane. When a neuron actively releases neurotransmitters, the dye becomes internalized within the recycled synaptic vesicles and stains the nerve terminals.


SynaptoProbe® Red can be used to visualize synaptic vesicles and their exocytosis and endocytosis in living neurons, identify actively firing neurons, and investigate the mechanisms of activity-dependent vesicle cycling. It is also helpful for the visualization of shear stress-induced plasma membrane damage in fibroblasts.

Uses

Water Soluble Fluorescent RH probe

Uses

N-(3-Triethylammoniopropyl)-4-(6-(4-(diethylamino)phenyl) hexatrienyl)pyridinium dibromide is a styryl dyes or a fluorescent dye. Dyes and metabolites.

Biological Activity

Fluorescent dye suitable for monitoring synaptic activity at neuromuscular junctions.

storage

Store at -20°C

Abs/Em Maxima

536/736 nm

FM4-64 Preparation Products And Raw materials

Raw materials

Preparation Products

FM4-64 Suppliers

Global Suppliers ( 46)
Supplier Tel Email Country ProdList Advantage
Shanghai Annengjian Biomedical Technology Co., LTD 021-68781987 13818305065 sales@energybiopharma.com China 788 58
Shanghai Aladdin Bio-Chem Technology Co.,LTD 400-6206333 13167063860 anhua.mao@aladdin-e.com China 29985 65
Shanghai Macklin Biochemical Co.,Ltd. 15221275939 15221275939 shenlinxing@macklin.cn China 15775 55
Shanghai YuanYe Biotechnology Co., Ltd. 15026964105 2881489226@qq.com China 89667 60
Chengdu Huachun Technology Co., Ltd 400-1166-196 15982826727 cdhxsj@163.com China 14571 60
Shanghai Chaolan Chemical Technology Center QQ:65489617 13301690235 Sales@ATKchemical.com China 9699 58
Shanghai Zhen Li Biological Technology Co., Ltd 021-16621358918; 18516310516;16621358918;13045646768 zhenlipharma888@163.com China 19060 58
Xi'an Confluore Biological Technology Co., Ltd. +86-156-80926068 +86-15680926068 1924344760@qq.com China 4229 58
TargetMol Chemicals Inc. +1-781-999-5354; +1-00000000000 marketing@targetmol.com United States 32431 58
ShangHai ChuanQian Chemcial Technique Centre 15869524721 3525679403@qq.com China 4565 58

View Latest Price from FM4-64 manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
FM4-64 pictures 2026-07-16 FM4-64
162112-35-8
$273.00-696.00 99.99% 10g TargetMol Chemicals Inc.
NeurotransRed pictures 2025-06-07 NeurotransRed
162112-35-8
100mg >95.00% 100mg Xian confluore Biological Technology Co., Ltd.
  • FM4-64 pictures
  • FM4-64
    162112-35-8
  • $273.00-696.00
  • 99.99%
  • TargetMol Chemicals Inc.
  • NeurotransRed pictures
  • NeurotransRed
    162112-35-8
  • $0.00
  • >95.00%
  • Xian confluore Biological Technology Co., Ltd.
Pyridinium, 4-[6-[4-(diethylamino)phenyl]- 1,3,5-hexatrienyl]-1-[3-(triethylammonio) propyl]-, dibromide 4-64 is TM of Molecular Probes FM® N-(3-Triethylammoniopropyl)-4-(6-(4-(diethy NeurotransRed C2 [N-(3-Triethylammoniumpropyl)-4-(6-(4-Diethylamino)phenyl)hexatrienyl)Pyridinium Dibromide],  NEUROTRANSRED C2 [N-(3-TRIETHYLAMMONIUMPROPYL)-4-(6-(4-DIETHYLAMINO)PHENYL)HEXATRIENYL)PYRIDINIUM DIBROMIDE],  FM® 4-64 IS TM OF MOLECULAR PROBES;N-(3-TRIETHYLAMMONIOPROPYL)-4-(6-(4-(DIETHY NeurotransRed C2 [N-(3-Triethylammoniumpropyl)-4-(6-(4-Diethylamino)phenyl)hexatrienyl)Pyridinium Dibromide], FM[R] 4-64 is TM of Molecular Probes NEUROTRANSRED C2 [N-(3-TRIETHYLAMMONIUMPROPYL)-4-(6-(4-DIETHYLAMINO)PHENYL)HEXATRIENYL)PYRIDINIUM DIBROMIDE], FM[R] 4-64 IS TM OF MOLECULAR PROBES ViVidFluor Neuro Red 4-64 is TM of Molecular Probes FMreg NeurotransRed C2 [N-(3-Triethylammoniumpropyl)-4-(6-(4-Diethylamino)phenyl)hexatrienyl)Pyridinium Dibromide],nbsp NeurotransRed 4-[6-[4-(Diethylamino)phenyl]-1,3,5-hexatrien-1-yl]-1-[3-(triethylammonio)propyl]pyridinium dibromide FM4-64 IS TM OF MOLECULAR PROBES N-(3-TRIETHYLAMMONIOPROPYL)-4-(6-(4-(DIETHY NEUROTRANSRED C2[N-(3-TRIETHYLAMMONIUMPROPYL)-4-(6-(4-DIETHYLAMINO)PHENYL)HEXATRIENYL)PYRIDINIUM DIBROMIDE],  FM4-64 IS TM OF MOLECULAR PROBES;N-(3-TRIETHYLAMMONIOPROPYL)-4-(6-(4-(DIETHY Neurodye GH4-64 N-(3-Triethylammoniopropyl)-4-(6-(4-(diethylamino)phenyl) hexatrienyl)pyridinium dibromide, Pyridinium, 4-[6-[4-(diethylamino)phenyl]- 1,3,5-hexatrienyl]-1-[3-(triethylammonio) propyl]-, dibromide NeurotransRed C2 [N-(3-TriethylaMMoniuMpropyl)-4-(6-(4-DiethylaMino)phenyl)hexatrienyl)PyridiniuM DibroMide], FM[R] 4-64 is TM of Molecular Probes 3-[4-[(1E,3E,5E)-6-[4-(diethylamino)phenyl]hexa-1,3,5-trienyl]pyridin-1-ium-1-yl]propyl-triethylazanium,dibromide Pyridinium,4-[6-[4-(diethylamino)phenyl]-1,3,5-hexatrien-1-yl]-1-[3-(triethylammonio)propyl]-,bromide (1:2) 4-(6-(4-(diethylamino)phenyl)hexa-1,3,5-trien-1-yl)-1-(3-(triethylammonio)propyl)pyridin-1-iumbromide NeurotransRed C? [N-(3-Triethylammoniumpropyl)-4-(6-(4-Diethylamino)phenyl)hexatrienyl)Pyridinium Dibromide], FM? 4-64 is TM of Molecular Probes SynaptoRed? Reagent SynaptoRed? C2 NeurotransRed C2 [N-(3-Triethylammoniumpropyl)-4-(6-(4-Diethylamino)phenyl)hexatrienyl)Pyridinium Dibromide], FM? 4-64 is TM of Molecular Probes FM4-64 162112-35-8 C30H45Br2N3 C30H45N32Br Styryl