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99921-94-5

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99921-94-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99921-94-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,2 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 99921-94:
(7*9)+(6*9)+(5*9)+(4*2)+(3*1)+(2*9)+(1*4)=195
195 % 10 = 5
So 99921-94-5 is a valid CAS Registry Number.

99921-94-5Downstream Products

99921-94-5Relevant articles and documents

The synthesis of esters under microwave irradiation using dry-media conditions

Loupy, Andre,Petit, Alain,Ramdani, Mohamed,Yvanaeff, Celine,Majdoub, Mustapha,et al.

, p. 90 - 95 (2007/10/02)

Practical and simple techniques are described for using nonmodified domestic microwave ovens as safe and convenient laboratory devices to obtain numerous esters.High pressures are avoided by conducting reactions with reactants impregnated on solid mineral supports in "dry media" or by phase transfer catalysis (PTC) in the absence of organic solvents.Two kinds of microwave effects are involved: (1) displacement of the equilibrium by evaporation of volatile polar molecules (water or alcohols) in esterfications and transesterfications; (2) acceleration of ionic reactions in carboxylate alkylations.As solvents are avoided, there is no need for sealed vessels and water separators.

Solid-Liquid Phase-Transfer Catalysis without Solvent: Mild and Efficient Conditions for Saponifications and Preparations of Hindered Esters

Loupy, Andre,Pedoussaut, Michel,Sansoulet, Jean

, p. 740 - 742 (2007/10/02)

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