128-83-6 Usage
Preparation
1-Amino-2,4-dibromoanthracene-9,10-dione and p-Methylaniline condensation.
Properties and Applications
blue. In concentrated sulfuric acid for the blue black, dilution after cobalt blue precipitation.
Check Digit Verification of cas no
The CAS Registry Mumber 128-83-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,2 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128-83:
(5*1)+(4*2)+(3*8)+(2*8)+(1*3)=56
56 % 10 = 6
So 128-83-6 is a valid CAS Registry Number.
InChI:InChI=1/C21H15BrN2O2/c1-11-6-8-12(9-7-11)24-16-10-15(22)19(23)18-17(16)20(25)13-4-2-3-5-14(13)21(18)26/h2-10,24H,23H2,1H3
128-83-6Relevant articles and documents
PHYSICAL CHARACTERISTICS OF SYNTHESIZED 1-AMINO-4-(ARYLAMINO)ANTHRAQUINONE 2-ETHER DYES FOR SYNTHETIC-POLYMER FIBERS.
Ukponmwan,Greenhalgh,Peters
, p. 482 - 483 (2007/10/02)
The synthesis and characteristics of a series of 2-ethers of 1-amino-4-(arylamino)anthraquinone by various preparative routes are described. Replacement of a bromine atom in the beta -position by a phenoxy group increased the molecular size.