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90705-89-8

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90705-89-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90705-89-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,7,0 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 90705-89:
(7*9)+(6*0)+(5*7)+(4*0)+(3*5)+(2*8)+(1*9)=138
138 % 10 = 8
So 90705-89-8 is a valid CAS Registry Number.

90705-89-8Downstream Products

90705-89-8Relevant articles and documents

Propargyl α-aryl-α-diazoacetates as robust reagents for the effective C–H bond functionalization of 1,3-diketones via scandium catalysis

Navale, Balu S.,Laha, Debasish,Bhat, Ramakrishna G.

, p. 1899 - 1903 (2019)

Propargyl α-aryl-α-diazoacetate a new class of reagent is developed for the effective C–H bond functionalization of 1,3-diketones at room temperature. The combination of scandium triflate and propargyl α-aryl-α-diazoacetate proved to be efficient catalyst

On the reactivity of imidazole carbamates and ureas and their use as esterification and amidation reagents

Heller, Stephen T.,Sarpong, Richmond

experimental part, p. 8851 - 8859 (2011/12/02)

The optimization, substrate scope, and mechanism of esterification and amidation of carboxylic acids mediated by imidazole-based reagents are discussed. The innate reactivity of carbonylimidazole reagents with a range of nucleophiles is also explored. New reagents developed for the synthesis of α,β-unsaturated esters are described, as are reagents for the preparation of tertiary amides directly from carboxylic acids.

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