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M8631

Sigma-Aldrich

Melanin

Synthetic

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About This Item

CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.83

form

powder

storage temp.

−20°C

InChI

1S/C18H10N2O4/c1-5-13-9-7(3-19-13)12-10-8(11(9)17(23)15(5)21)4-20-14(10)6(2)16(22)18(12)24/h3-4,19-20H,1-2H3

InChI key

XUMBMVFBXHLACL-UHFFFAOYSA-N

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General description

Melanin is a vital pigment present on the surface structures of vertebrates, which contribute to skin color. It has three forms such as, eumelanin, pheomelanin and neuromelanin. Melanin has cation chelating and redox properties. It is a potent absorbent of light. Melanin functions as a chemoprotective and photoprotective pigment. Mutations in this gene are associated with oculocutaneous albinism, vitiligo, piebaldism and Waardenburg syndrome.

Application

Melanin has been used:
  • in spectrophotometry
  • to study its effect on reverse transcription polymerase chain reaction (RT-PCR) inhibition and effect of BSA (bovine serum albumin) in overcoming the inhibition
  • as an absorber for skin layer in near-infrared tissue spectra
  • Raman spectroscopy

Preparation Note

Prepared by oxidation of tyrosine with hydrogen peroxide.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Melanin
Riley PA
The International Journal of Biochemistry & Cell Biology, 29(11), 1235-1239 (1997)
Bovine serum albumin reverses inhibition of RT-PCR by melanin
Giambernardi TA, et al.
Biotechniques, 25(4), 564-566 (1998)
Constant rate of steady-state self-antigen trafficking from skin to regional lymph nodes
Yoshino M, et al.
International Immunology, 18(11), 1541-1548 (2006)
Fengmei Zou et al.
Biomedical optics express, 1(3), 748-761 (2011-01-25)
An accurate SO(2) prediction method for using broadband continuous-wave diffuse reflectance near infrared (NIR) spectroscopy is proposed. The method fitted the NIR spectra to a Taylor expansion attenuation model, and used the simulated annealing method to initialize the nonlinear least
Danielle J Harper et al.
Journal of biophotonics, 12(12), e201900153-e201900153 (2019-07-25)
Previous studies for melanin visualization in the retinal pigment epithelium (RPE) have exploited either its absorption properties (using photoacoustic tomography or photothermal optical coherence tomography [OCT]) or its depolarization properties (using polarization sensitive OCT). However, these methods are only suitable

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