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21931-02-2

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21931-02-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21931-02-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,3 and 1 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21931-02:
(7*2)+(6*1)+(5*9)+(4*3)+(3*1)+(2*0)+(1*2)=82
82 % 10 = 2
So 21931-02-2 is a valid CAS Registry Number.

21931-02-2Relevant articles and documents

MODULATORS OF SESTRIN-GATOR2 INTERACTION AND USES THEREOF

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Paragraph 00263; 00264; 00265, (2018/11/22)

The present invention provides compounds, compositions thereof, and methods of using the same.

Organocatalysis of asymmetric aldol reaction in water: Comparison of catalytic properties of (S)-valine and (S)-proline amides

Kucherenko,Siyutkin,Dashkin,Zlotin

, p. 1010 - 1015 (2014/03/21)

(S)-Valine amides containing (S)- or (R)-α-phenylethyl substituents at N1 atom efficiently catalyze asymmetric aldol reactions between cyclic (heterocyclic) ketones and aromatic aldehydes in water, predominantly giving rise to the aldol anti-di

A novel generation of coupling reagents. Enantiodifferentiating coupling reagents prepared in situ from 2-chloro-4,6-dimethoxy-1,3,5-triazine (CDMT) and chiral tertiary amines

Kaminski,Kolesinska,Kaminska,Gora

, p. 6276 - 6281 (2007/10/03)

Coupling of racemic N-protected amino acids with amino components by means of 2-chloro-4,6-dimethoxy-1,3,5-triazine (CDMT) in the presence of chiral tertiary amines such as strychnine, brucine, and sparteine proceeds enantioselectively, affording appropriate amides or dipeptides in 69-85% yield. The configuration of the preferred enantiomer and enantiomeric enrichment depend on the structures of the amine and carboxylic acid. Calculated Kagan enantioselectivity parameters (s) are in the range 1.6-195. Chiral triazinylammonium chlorides formed in situ from CDMT and chiral tertiary amines are postulated as reactive intermediates involved in the process of enantioselective activation of N-protected amino acids.

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