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2,3-piperidinedione 3-(5'-methoxy-2'-bromophenyl)hydrazone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

91720-57-9

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91720-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91720-57-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,2 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 91720-57:
(7*9)+(6*1)+(5*7)+(4*2)+(3*0)+(2*5)+(1*7)=129
129 % 10 = 9
So 91720-57-9 is a valid CAS Registry Number.

91720-57-9Downstream Products

91720-57-9Relevant academic research and scientific papers

Carboxyl-Mediated Pictet-Spengler Reaction. Direct Synthesis of 1,2,3,4-Tetrahydro-β-carbolines from Tryptamine-2-carboxylic Acids

Narayanan, Krishnaswamy,Schindler, Liesl,Cook, James M.

, p. 359 - 365 (2007/10/02)

The Pictet-Spengler condensation of various tryptamine-2-carboxylic acids 9a-f with carbonyl compounds in benzene/dioxane/trifluoroacetic acid (Table I) with simultaneous loss of carbon dioxide afforded directly the corresponding 1,2,3,4-tetrahydro-β-carb

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