20849-57-4 Usage
General Description
2,3,3-trimethyl-1-(prop-2-en-1-yl)-3H-indolium, also known as Violamine R, is a synthetic chemical compound that belongs to the indolium class of compounds. It is commonly used as a dye and is known for its bright violet color. This chemical is often used in the textile and paper industry as part of the dyeing process. It is also used in biological research and medical diagnostics as a staining agent. Violamine R has a characteristic molecular structure with a prop-2-en-1-yl group attached to a 3H-indolium core, and its chemical properties make it useful in various applications in industry and scientific research.
Check Digit Verification of cas no
The CAS Registry Mumber 20849-57-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,4 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 20849-57:
(7*2)+(6*0)+(5*8)+(4*4)+(3*9)+(2*5)+(1*7)=114
114 % 10 = 4
So 20849-57-4 is a valid CAS Registry Number.
20849-57-4Relevant articles and documents
SYNTHESE DE QUELQUES SPIRO ET SPIRO PHOTOCHROMIQUES. APPLICATION DE LA METHODOLOGIE DE LA RECHERCHE EXPERIMENTALE
Pottier, E.,Sergent, M.,Luu, R. Phan Tan,Guglielmetti, R.
, p. 719 - 740 (2007/10/02)
Some spiro I and spiro II substituted by different groups were synthesized in order to evaluate their photochromic properties and to optimize the preparation of spiroheterocyclic systems.In addition, some spiro III were also prepared as reference compounds.Their physical and spectroscopic characteristics (UV, 1H and 13C) were determined.A study using the experimental design methodology allowed to point out the most important factors for improving the reaction yields. KEYWORDS: Photochromism, spirooxazines, spiropyrans, synthesis, 1H NMR, experimental design methodology.
