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816457-61-1

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816457-61-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 816457-61-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,6,4,5 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 816457-61:
(8*8)+(7*1)+(6*6)+(5*4)+(4*5)+(3*7)+(2*6)+(1*1)=181
181 % 10 = 1
So 816457-61-1 is a valid CAS Registry Number.

816457-61-1Relevant articles and documents

2-Trimethylsilylethanesulfonyl (SES) versus tosyl (Ts) protecting group in the preparation of nitrogen-containing five-membered rings. A novel route for the synthesis of substituted pyrrolines and pyrrolidines

Declerck, Valerie,Allouchi, Hassan,Martinez, Jean,Lamaty, Frederic

, p. 1518 - 1521 (2007/10/03)

(Chemical Equation Presented) The 2-trimethylsilylethanesulfonyl (or SES) protecting group was compared to the tosyl (Ts) group in the preparation of a nitrogen-containing five-membered ring obtained by the aza-Baylis - Hillman/alkylation/RCM route. While

Sequential aza-Baylis-Hillman/ring closing metathesis/aromatization as a novel route for the synthesis of substituted pyrroles

Declerck, Valerie,Ribiere, Patrice,Martinez, Jean,Lamaty, Fredereric

, p. 8372 - 8381 (2007/10/03)

A new route to diverse 2-substituted-3-methoxycarbonyl pyrroles has been developed. Diverse SES protected α-methylene β-aminoesters were obtained by a 3-component aza-Baylis-Hillman reaction. Diversity arose from the aryl aldehydes which can be used in th

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