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70299-37-5

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70299-37-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70299-37-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,2,9 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 70299-37:
(7*7)+(6*0)+(5*2)+(4*9)+(3*9)+(2*3)+(1*7)=135
135 % 10 = 5
So 70299-37-5 is a valid CAS Registry Number.

70299-37-5Downstream Products

70299-37-5Relevant articles and documents

Reactions of α,N-Diarylnitrones with O-Methyl Diphenylphosphinothioate and Oxidations of N-Alkylidene-2-hydroxyanilines with Silver Oxide. Preparation of Benzoxazoles

Yoshifuji, Masaaki,Nagase, Rihei,Inamoto, Naoki

, p. 873 - 876 (1982)

Reactions of α,N-diarylnitrones in the presence of O-methyl diphenylphosphinothioate at 150 deg C gave 2-arylbenzoxazoles (3) in fairly good yields.Oxidation of N-alkylidene-2-hydroxyanilines with silver oxide afforded 2-alkenyl-, 2-alkyl-, or 2-arylbenzoxazoles (7 and 3) in good yields under mild reaction conditions (at room temperature).A plausible mechanism for formation of 3 and 7 has been discussed briefly.

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