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Key Documents

M1255

Sigma-Aldrich

Calcein Blue

Powder

Synonym(s):

4-Methylumbelliferone-8-methyliminodiacetic acid

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About This Item

Empirical Formula (Hill Notation):
C15H15NO7
CAS Number:
Molecular Weight:
321.28
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47
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Product Name

Calcein Blue, fluorescent dye

Quality Level

form

powder

technique(s)

titration: suitable

color

white to light yellow

solubility

1 M NaOH: 50 mg/mL

fluorescence

λex 322 nm; λem 445 nm in methanol

suitability

suitable for indicator for EDTA titration

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

CC1=CC(=O)Oc2c(CN(CC(O)=O)CC(O)=O)c(O)ccc12

InChI

1S/C15H15NO7/c1-8-4-14(22)23-15-9(8)2-3-11(17)10(15)5-16(6-12(18)19)7-13(20)21/h2-4,17H,5-7H2,1H3,(H,18,19)(H,20,21)

InChI key

RJPSHDMGSVVHFA-UHFFFAOYSA-N

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General description

Calcein Blue is a cell-permeable dye that stains viable cells. Upon entering the cell, intracellular esterases cleave the acetoxymethyl (AM) ester group, yielding the membrane-impermeable Calcein Blue fluorescent dye. The staining applications of Calcein blue include tumor tissues, mineralized tissues, bone, amino acids, and many more.

Application

Calcein blue has been used fluorescent labeling of the mineralised sections of bone. Calcein blue AM ester hydrolyzed to calcein blue is suitable as a a viability stain, both microscopically, and in fluorescence activated cell sorting systems. It is also used as a merker of living cells like Schwann cells at neuromuscular junctions.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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T Lymphocytes Influence the Mineralization Process of Bone.
El Khassawna T
Frontiers in Immunology, 8, 562-562 (2017)
Zachary J Reitman et al.
Nature communications, 10(1), 3731-3731 (2019-08-21)
Pilocytic astrocytoma (PA), the most common childhood brain tumor, is a low-grade glioma with a single driver BRAF rearrangement. Here, we perform scRNAseq in six PAs using methods that enabled detection of the rearrangement. When compared to higher-grade gliomas, a
Indicators: International Series of Monographs in Analytical Chemistry (2013)
Liangbo Hu et al.
Virologica Sinica, 34(4), 454-466 (2019-06-16)
Baculovirus can transduce a wide range of mammalian cells and is considered a promising gene therapy vector. However, the low transduction efficiency of baculovirus into many mammalian cells limits its practical application. Co-expressing heterologous viral glycoproteins (GPs), such as vesicular
Xiaomian Wu et al.
International journal of nanomedicine, 7, 1215-1225 (2012-03-16)
Compared with titanium (Ti) and other metal implant materials, poly(ether-ether ketone) (PEEK) shows outstanding biomechanical properties. A number of studies have also reported attractive bioactivity for nano-TiO(2) (n-TiO(2)). In this study, n-TiO(2)/PEEK nanocomposites were prepared, taking advantage of the unique

Articles

Nitric oxide (NO) as a signal transporter in neurons, endothelial cells and in the immune system.

Questions

  1. Is Calcein Blue identical to Calcein Blue AM, and if not, what is the difference? Would it be compatible in a flourescent microscopy assay looking at %viability of THP-1 cells?

    1 answer
    1. product M1255, Calcein Blue to is used to stain cells, but it will stain living or dead cells. For a cell viability stain, one can use Calcein Blue AM. The difference between Calcein Blue and Calcein Blue AM is the methyl-iminodiaceitc acid group that chelates the divalent metal has acetoxymethyl esters on it in Calcein Blue AM. The esters are cleaved inside of viable cells, but remain on the molecule in the absence of active esterases. So, if you use M1255 it will stain all the cell whether alive or dead.

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