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757955-30-9

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757955-30-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 757955-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,5,7,9,5 and 5 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 757955-30:
(8*7)+(7*5)+(6*7)+(5*9)+(4*5)+(3*5)+(2*3)+(1*0)=219
219 % 10 = 9
So 757955-30-9 is a valid CAS Registry Number.

757955-30-9Downstream Products

757955-30-9Relevant articles and documents

Synthesis of medium ring heterocycles using an intramolecular Heck reaction

Arnold, Leggy A.,Luo, Wenchen,Guy, R. Kiplin

, p. 3005 - 3007 (2007/10/03)

(Equation Presented) Historically, general convergent syntheses of medium ring heterocycles have been difficult to develop. Herein, we describe the synthesis of five classes of heterocycles: dihydrodibenzo[b,f]azepine, -oxocine, and -thiocine and dibenzo[b,f]azepine and -oxepine using a strategy of alkylation followed by highly selective intramolecular Heck arylation reaction. The hetero-tricyclic compounds were available in only two steps starting from commercially available starting materials.

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