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MilliporeSigma

O7380

Orcein

Powder or crystals

Synonym(s):

Natural Red 28

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$110.00

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$193.00

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About This Item

CAS Number:
1400-62-0
EC Number:
215-750-6
MDL number:
MFCD00062310
UNSPSC Code:
12171500
NACRES:
NA.47

Key Documents

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Product Name

Orcein, synthetic

biological source

synthetic

Quality Level

100

form

powder or crystals

composition

Carbon: 41.72%

Nitrogen: 2.23%

color

dark brown

solubility

1 M NaOH: 1 mg/mL, clear

εmax

≥400 at 580 nm in 0.1 M NaOH

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

N(c5c(cc(cc5C)O)O)C1=C(c2[c]([o][c]3c2C(=C(C(=O)C=3)Nc4c(cc(cc4C)O)O)C)=CC1=O)C

InChI

1S/C28H24N2O7/c1-11-5-15(31)7-17(33)25(11)29-27-13(3)23-21(9-19(27)35)37-22-10-20(36)28(14(4)24(22)23)30-26-12(2)6-16(32)8-18(26)34/h5-10,29-34H,1-4H3

InChI key

VPEASJIRGSVXBF-UHFFFAOYSA-N

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1 of 4

This Item
O75051.04159O0625
Orcein synthetic

Sigma-Aldrich

O7380

Orcein

Orcein synthetic, certified by the BSC

Sigma-Aldrich

O7505

Orcein

Orcein

Sigma-Aldrich

1.04159

Orcein

Oil Red O certified by the BSC

Sigma-Aldrich

O0625

Oil Red O

color

dark brown

color

-

color

-

color

dark red to brown

form

powder or crystals

form

powder

form

solid

form

powder

solubility

1 M NaOH: 1 mg/mL, clear

solubility

1 M NaOH: 1 mg/mL

solubility

-

solubility

chloroform/ethanol (1:1): 1 mg/mL

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

composition

Carbon: 41.72%

Nitrogen: 2.23%

composition

-

composition

-

composition

Dye content, ≥75%

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

200

General description

Orcein or CI Natural Red 28 is an elastic tissue stain. The fluorescence properties of Orcein show maximum emission peak at 587 nm (low concentration) and 620 nm (high concentration) upon suitable excitation and acidic pH.

Application

Orcein is highly recommended as a vital stain for elastic fibers and lamellae. Orcein is used as a nuclear stain for mounting embryos and assessing the maturation of oocytes. Other routine applications of orcein involve the staining of plant chromosomes.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCN7916
BCCM6427
BCCK5288
BCCH6378
BCCG9149

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Mariusz Gajda et al.
Histochemistry and cell biology, 147(6), 671-681 (2017-02-09)
Numerous cellular and extracellular components should be analyzed in sections of atherosclerotic plaques to assess atherosclerosis progression and vulnerability. Here, we combined orcein (O) staining for elastic fibers and martius scarlet blue (MSB) polychrome to visualize various morphological contents of
M L Molero et al.
Journal of microscopy, 144(Pt 1), 45-53 (1986-10-01)
The fluorescence properties of orcein are described in this paper. Under suitable exciting light, acidic solutions of orcein showed emission peaks at 587 nm (low concentration) and at 620 nm (high concentration). In fluorescence microscopy an intense orange-red emission was
Popescu P and Hayes H
Techniques in Animal Cytogenetics (2000)
The effects of L-ergothioneine and L-ascorbic acid on the in vitro maturation (IVM) and embryonic development (IVC) of sheep oocytes.
OZTURKLER Y
Development, 5-5 (2010)
Efficient decellularization of whole porcine kidneys improves reseeded cell behavior.
Poornejad N
Biomedical Materials (Bristol, England), 11, 025003-025003 (2016)
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