Azulene-5-carboxylic acid is a naturally occurring organic compound derived from azulene, a large bicyclic aromatic hydrocarbon found in certain essential oils, particularly in chamomile and certain types of coal tar. It is characterized by its blue color and unique structure, which consists of a seven-membered ring fused to a five-membered ring. azulene-5-carboxylic acid has potential applications in the pharmaceutical and chemical industries, such as in the synthesis of various drugs, dyes, and other organic compounds. Due to its stability and unique properties, azulene-5-carboxylic acid has been the subject of research for its potential use in the development of new materials and chemical processes.
The CAS Registry Mumber 1202-03-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,2,0 and 2 respectively; the second part has 2 digits, 0 and 3 respectively. Calculate Digit Verification of CAS Registry Number 1202-03: (6*1)+(5*2)+(4*0)+(3*2)+(2*0)+(1*3)=25 25 % 10 = 5 So 1202-03-5 is a valid CAS Registry Number.