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64411-37-6

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64411-37-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 64411-37-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,4,1 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 64411-37:
(7*6)+(6*4)+(5*4)+(4*1)+(3*1)+(2*3)+(1*7)=106
106 % 10 = 6
So 64411-37-6 is a valid CAS Registry Number.

64411-37-6Relevant articles and documents

Intermediate reaches reed that Wei new synthetic process of the

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Paragraph 0024; 0025, (2017/08/25)

The invention provides a novel synthesis process of Darunavir intermediate, N-tertbutyloxycarbonyl-L-phenylalanine is used as a raw material, esterification, condensation, reduction, hydrogenation and reduction amination, and other reactions are carried out for preparing the key intermediate of Darunavir: (2R,3S)-3-(tert-butyloxycarbonyl)amino-1-[(2-methyl propyl)amino]-4-phenyl-2-butanol. The new synthesis process of Darunavir intermediate has the advantages of mild reaction condition, simple operation, and high reaction selectivity and yield, and the process is suitable for industrial production.

Selective esterifications of primary alcohols in a water-containing solvent

Wang, Yong,Aleiwi, Bilal A.,Wang, Qinghui,Kurosu, Michio

supporting information, p. 4910 - 4913 (2013/01/15)

Oxyma and an oxyma derivative, (2,2-dimethyl-1,3-dioxolan-4-yl)methyl 2-cyano-2-(hydroxyimino)acetate (5b), displayed a remarkable effect on selective esterifications of primary alcohols. A wide range of carboxylic acids could be esterified with primary alcohols by using EDCI, NaHCO3, and Oxyma or Oxyma derivative 5b in 5% H2O-CH3CN. Oxyma derivative 5b is particularly useful, since it could be removed after the reaction via a simple basic or an acidic aqueous workup procedure.

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