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249764-77-0

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249764-77-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 249764-77-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,9,7,6 and 4 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 249764-77:
(8*2)+(7*4)+(6*9)+(5*7)+(4*6)+(3*4)+(2*7)+(1*7)=190
190 % 10 = 0
So 249764-77-0 is a valid CAS Registry Number.

249764-77-0Relevant articles and documents

N-cumyl benzamide, sulfonamide, and aryl O-carbamate directed metalation groups. Mild hydrolytic lability for facile manipulation of directed ortho metalation derived aromatics

Metallinos, Costa,Nerdinger, Sven,Snieckus, Victor

, p. 1183 - 1186 (2008/02/09)

(Matrix Presented) N-Cumyl benzamide (2), sulfonamide (8), and O-carbamate (11) compounds undergo directed ortho metalation under standard conditions to give, after quench with a variety of electrophiles, the substituted products 3, 9, and 12, respectively. Regiospecific and convenient approaches to phthalimides (7), 1,2-benzisothiazole 1,1-dioxides (10b), and ortho-substituted phenols (13a) and salicylamides (13b) are thereby established The mild deprotection protocol for these new cumyl directed metalation groups (DMGs) suggests that they will supersede previous corresponding groups for synthetic anionic aromatic chemistry.

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