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7H-8,9,10-Triaza-cyclopenta[a]phenalene-9-carbaldehyde is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

133295-19-9

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133295-19-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133295-19-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,2,9 and 5 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 133295-19:
(8*1)+(7*3)+(6*3)+(5*2)+(4*9)+(3*5)+(2*1)+(1*9)=119
119 % 10 = 9
So 133295-19-9 is a valid CAS Registry Number.

133295-19-9Downstream Products

133295-19-9Relevant academic research and scientific papers

1,2,3-Triazoles from (Z)-β-(Formyloxy)vinyl Azides and Triethyl Phosphite

D'Andrea, Stan V.,Ghosh, Arun,Wang, Wuyi,Freeman, Jeremiah P.,Szmuszkovicz, Jacob

, p. 2680 - 2684 (1991)

(Z)-Sodium enolates of two α-azido ketones are O-formylated with Me3CCO2CHO in high yield to give isolable (Z)-β-(formyloxy)vinyl azides, which are converted to 1,2,3-triazoles under the influence of triethyl phosphite.A mechanism is proposed for triazole formation involving 1,5-electrocyclization of a vinyl phosphazide intermediate.

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