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1200405-67-9

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1200405-67-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1200405-67-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,0,4,0 and 5 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1200405-67:
(9*1)+(8*2)+(7*0)+(6*0)+(5*4)+(4*0)+(3*5)+(2*6)+(1*7)=79
79 % 10 = 9
So 1200405-67-9 is a valid CAS Registry Number.

1200405-67-9Relevant articles and documents

Bifunctional Squaramide Organocatalysts for the Asymmetric Addition of Formaldehyde tert-Butylhydrazone to Simple Aldehydes

Matador, Esteban,de Gracia Retamosa, María,Monge, David,Iglesias-Sigüenza, Javier,Fernández, Rosario,Lassaletta, José M.

, p. 6854 - 6860 (2018)

The nucleophilic addition of formaldehyde tert-butylhydrazone to simple aldehydes (a formal hetero-carbonyl–ene reaction) can be performed with good reactivity and excellent enantioselectivity by virtue of the dual hydrogen-bonding activation exerted by amide–squaramide organocatalysts. The resulting hydroxydiazenes (azo alcohols) were isolated in high yields as enantiomerically enriched azoxy compounds after a regioselective azo-to-azoxy transformation. Subsequent derivatization provides an entry to relevant amino alcohols, oxazolidinones, and derivatives thereof.

COMPOUNDS AND RELATED METHODS OF USE

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Paragraph 0210; 0211, (2013/03/28)

Described herein are compounds of formula (I), related compositions, and their use, for example in the formation of α-amino acids or a precursor thereof such as an α-aminonitrile.

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