33739-60-5 Usage
Synthesis Reference(s)
Journal of Heterocyclic Chemistry, 28, p. 717, 1991 DOI: 10.1002/jhet.5570280328
Check Digit Verification of cas no
The CAS Registry Mumber 33739-60-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,7,3 and 9 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 33739-60:
(7*3)+(6*3)+(5*7)+(4*3)+(3*9)+(2*6)+(1*0)=125
125 % 10 = 5
So 33739-60-5 is a valid CAS Registry Number.
InChI:InChI=1/C8H6O4/c9-6-4-2-1-3-5(7(6)10)8(11)12/h1-4H,(H,9,10)(H,11,12)
33739-60-5Relevant articles and documents
Synthesis and Reactions of 3-Carboxytropolone. Conversion to Heterocycle-fused Troponoid Compounds
Zhang, Luo-Cheng,Imafuku, Kimiaki
, p. 717 - 720 (2007/10/02)
The haloform reaction of 3-acetyltropolone (1) afforded 3-carboxytropolone (2) which was treated with diazomethane to give 2-methoxy-3-methoycarbonyltropone (3a) and 2-methoxy-7-methoxycarbonyltropone (3b).The tropolone 2 reacted with hydrazine to afford
Pharmacologic studies of troponoids. I. Hypothermic analgesic and antiinflammatory actions of troponoids (Japanese)
Ozawa,Seto,Murai,Ohizumi
, p. 550 - 559 (2007/10/04)
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