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74117-98-9

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74117-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74117-98-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,1 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 74117-98:
(7*7)+(6*4)+(5*1)+(4*1)+(3*7)+(2*9)+(1*8)=129
129 % 10 = 9
So 74117-98-9 is a valid CAS Registry Number.

74117-98-9Relevant articles and documents

A NEW SYNTHETIC METHOD FOR PREPARATION OF 1,3,4,5-TETRAHYDRO-2H-1-BENZAZEPIN-2-ONE DERIVATIVES

Ito, Yoshihiko,Kobayashi, Kazuhiro,Maeno, Masayuki,Saegusa, Takeo

, p. 487 - 490 (2007/10/02)

A 1,4-addition reaction of o-lithiomethylphenyl isocyanide to α,β-unsaturated carboxylic acid esters gives, after acid hydrolysis, γ-(o-aminophenyl)butyric acid esters, which are heated at 180 deg C to afford 1,3,4,5-tetrahydro-2H-1-benzazepin-2-one deriv

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