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344664

Sigma-Aldrich

Orange OT

Dye content 75 %

Synonym(s):

1-(o-Tolylazo)-2-naphthol, Solvent Orange 2

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About This Item

Linear Formula:
CH3C6H4N=NC10H6OH
CAS Number:
2646-17-5
Molecular Weight:
262.31
Colour Index Number:
12100
Beilstein/REAXYS Number:
8330630
EC Number:
220-162-8
MDL number:
MFCD00059523
UNSPSC Code:
12171500
PubChem Substance ID:
24861272

composition

Dye content, 75%

mp

124-126 °C (lit.)

λmax

505 nm

SMILES string

Cc1ccccc1N=Nc2c(O)ccc3ccccc23

InChI

1S/C17H14N2O/c1-12-6-2-5-9-15(12)18-19-17-14-8-4-3-7-13(14)10-11-16(17)20/h2-11,20H,1H3

InChI key

BQFCCCIRTOLPEF-UHFFFAOYSA-N

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General description

Orange OT is a dye that is not soluble in aqueous solution.[1] It is also known as (1-(2-methyl-phenylazo)-2-naphthol).[2]

pictograms

Health hazard
GHS08

signalword

Warning

hcodes

H351

pcodes

P281

Hazard Classifications

Carc. 2

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificates of Analysis (COA)

Lot/Batch Number
MKBP1983V
MKBK5883V
MKBJ3762V
MKBG3621V
MKBB6846

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Calixarenes, a Versatile Class of Macrocyclic Compounds, 180-180 (2012)
Artificial chaperone-assisted refolding of carbonic anhydrase B.
Rozema D and Gellman SH
The Journal of Biological Chemistry, 271(7), 3478-3487 (1996)
O Schimmer et al.
Mutation research, 249(1), 105-110 (1991-07-01)
Seven naturally occurring furoquinoline alkaloids were investigated for their photobiological activity using arg-1 cells of Chlamydomonas reinhardtii. UV-A-mediated toxicity of the compounds was calculated from the colony-forming ability of the treated cells. The UV-A-mediated mutagenicity was measured by counting the
S Adachi et al.
Journal of pharmacobio-dynamics, 5(4), 273-277 (1982-04-01)
Effect of potent cytochrome P-448 inducer, 1-m-tolueneazo-2-naphthol (m-TAN) on hepatic microsomal UDP-glucuronyl-transferase (UDPGT) activity was studied. The UDPGT activity reached the maximum level on the fifth day after either a single injection or consecutive daily administrations. The UDPGT activities towards
C O Mills et al.
Biochimica et biophysica acta, 876(3), 677-683 (1986-05-21)
We investigated the effect of conjugation with the aromatic amino acid tyrosine on the critical micellar concentration (CMC) of bile salts. The CMC values were determined by surface tension and by dye solubilization. The surface tension measurement employed the Du
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