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Merck
CN

50484

Methylene Blue solution

suitable for microbiology

Synonym(s):

Ehrlich’s reagent III, Loeffler’s Methylene Blue

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About This Item

Empirical Formula (Hill Notation):
C16H18ClN3S
CAS Number:
61-73-4
Molecular Weight:
319.85
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
329757603
MDL number:
MFCD00012111
Beilstein/REAXYS Number:
3641570

Key Documents

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Product Name

Methylene Blue solution, suitable for microbiology

InChI

1S/C16H18N3S.ClH/c1-18(2)11-5-7-13-15(9-11)20-16-10-12(19(3)4)6-8-14(16)17-13;/h5-10H,1-4H3;1H/q+1;/p-1

SMILES string

[Cl-].CN(C)c1ccc2N=C3C=C\C(C=C3Sc2c1)=[N+](/C)C

InChI key

CXKWCBBOMKCUKX-UHFFFAOYSA-M

shelf life

limited shelf life, expiry date on the label

concentration

0.5% in H2O (0.5 g/100 mL)

technique(s)

microbe id | staining: suitable

application(s)

microbiology

suitability

Bacillus spp.
Corynebacterium spp.
bacteria

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General description

Methylene Blue was earlier recognized as a good nuclear stain, the staining solutions are always either aged or alkalized, if not both. More importantly it is an excellent stain for ribonucleic acid, which is the important stainable constituent of bacterial bodies, of lymphocyte and hemoportoal cytoplasm, and of nerve cell tigroid granules. It can also be employed in capsule stain. The capsule stain begins as a negative stain leaving the organisms colorless. The capsule are clearly seen as halo surrounding the bacterial cell. Another staining procedure is performed with nigrosin (Cat. No. 43925).

Other Notes

reagent contains:
methylene blue 0.5 g
distilled water 100 ml

Storage Class

12 - Non Combustible Liquids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN9548
BCCL7266
BCCM5734
BCCK1480
BCCH4342

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Marcel Gehrung et al.
Journal of biomedical optics, 24(12), 1-11 (2019-10-19)
Photoacoustic tomography (PAT) is intrinsically sensitive to blood oxygen saturation (sO2) in vivo. However, making accurate sO2 measurements without knowledge of tissue- and instrumentation-related correction factors is extremely challenging. We have developed a low-cost flow phantom to facilitate validation of
Jonel Steffen et al.
The British journal of ophthalmology, 98(1), 13-15 (2013-10-26)
To evaluate the diagnostic accuracy of methylene blue used as a non-invasive in vivo stain to detect ocular surface squamous neoplasia (OSSN). A test validation study was performed according to Standards for the reporting of diagnostic accuracy studies (STARD) guidelines
Q R J G Tummers et al.
European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology, 40(7), 850-858 (2014-05-28)
Despite recent developments in preoperative breast cancer imaging, intraoperative localization of tumor tissue can be challenging, resulting in tumor-positive resection margins during breast conserving surgery. Based on certain physicochemical similarities between Technetium((99m)Tc)-sestamibi (MIBI), an SPECT radiodiagnostic with a sensitivity of
Nicolaas Lucius Gerlach et al.
Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons, 72(4), 666-671 (2014-02-01)
To establish the accuracy of cone-beam computed tomographic (CBCT) views in determining the position and diameter of the mandibular canal. Two freshly frozen cadaver heads, 1 dentate and 1 edentate, were used to acquire CBCT scans. Measurements on cross-sectional CBCT
Muhannad N Fadhel et al.
Journal of biomedical optics, 24(11), 1-8 (2019-11-11)
Solid tumors are typically supplied nutrients by a network of irregular blood vessels. By targeting these vascular networks, it might be possible to hinder cancer growth and metastasis. Vascular disrupting agents induce intertumoral hemorrhaging, making photoacoustic (PA) imaging well positioned
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