74509-96-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74509-96-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,5,0 and 9 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 74509-96:
(7*7)+(6*4)+(5*5)+(4*0)+(3*9)+(2*9)+(1*6)=149
149 % 10 = 9
So 74509-96-9 is a valid CAS Registry Number.
74509-96-9Relevant articles and documents
Addition von Aldehyden an aktivierte Doppelbindungen, XXIV Darstellung und Reaktionen N-haltiger 1,4-Diketone
Stetter, Hermann,Lappe, Peter
, p. 1890 - 1897 (2007/10/02)
Thiazolium salt-catalyzed addition of aldehydes containing nitrogen groups to vinyl ketones yields 1,4-diketones (1 - 27). γ-Diketones (20, 25) thus obtained lead to the formation of carbazole derivatives (28 - 31).
