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34658-65-6

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34658-65-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34658-65-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,6,5 and 8 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 34658-65:
(7*3)+(6*4)+(5*6)+(4*5)+(3*8)+(2*6)+(1*5)=136
136 % 10 = 6
So 34658-65-6 is a valid CAS Registry Number.

34658-65-6Relevant articles and documents

Facile One-Pot Synthesis of Substituted Hydantoins from Carbamates

Tanwar, Dinesh Kumar,Ratan, Anjali,Gill, Manjinder Singh

supporting information, p. 2285 - 2290 (2017/10/06)

A novel and simple approach for the preparation of 3-substituted, 5-substituted, or 3,5-disubstituted hydantoins is reported. It involves the reaction of α-amino methyl ester hydrochlorides with carbamates to yield the corresponding ureido derivatives, which subsequently cyclize under basic conditions to produce substituted hydantoins in good yields. By applying this method, the bioactive anticonvulsant drug ethotoin was synthesized in good yield. The process avoids conventional multistep protocols and does not use the hazardous, irritant, toxic, or moisture-sensitive reagents, such as isocyanates or chloroformates, that are commonly used for the synthesis of these important compounds.

Functionalized amino acid anticonvulsants: Synthesis and pharmacological evaluation of conformationally restricted analogues

LeTiran,Stables,Kohn

, p. 2693 - 2708 (2007/10/03)

Proven conformationally restricted analogues of anticonvulsant functionalized amino acids (FAAs) were prepared using short-range cyclizations and evaluated in pharmacological assays providing new information concerning the structural requirements for FAA function.

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