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49587-03-3

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49587-03-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 49587-03-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,5,8 and 7 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 49587-03:
(7*4)+(6*9)+(5*5)+(4*8)+(3*7)+(2*0)+(1*3)=163
163 % 10 = 3
So 49587-03-3 is a valid CAS Registry Number.

49587-03-3Relevant articles and documents

Unambiguous detection of 2,4,6-cycloheptatrien-1-ol by NMR spectroscopy and trapping with phenyltriazolinedione

Oda, Mitsunori,Okawa, Kazuya,Tsuri, Hitoshi,Kuroda, Shigeyasu

, p. 795 - 800 (2007/10/03)

For the first time, the title alcohol 3 was unambiguously detected as a transient intermediate leading to ditropylether (6) in a cation-anion reaction between the tropylium ion (5) and hydroxide ion in an aqueous solution by NMR spectroscopy. It was also found that 6 gives 3 as a transient product in acid-catalyzed disproportionation of 6 into a mixture of tropone (4) and 1,3,5-cycloheptatriene (7) in chloroform containing water. Furthermore the existence of 3 in the latter reaction was confirmed by trapping with 4-phenyl-1,2,4-triazoline-3,5-dione to afford the [4+2]cycloadduct of the norcaradiene form of 3.

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