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637349-28-1

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637349-28-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 637349-28-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,3,4 and 9 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 637349-28:
(8*6)+(7*3)+(6*7)+(5*3)+(4*4)+(3*9)+(2*2)+(1*8)=181
181 % 10 = 1
So 637349-28-1 is a valid CAS Registry Number.

637349-28-1Upstream product

637349-28-1Downstream Products

637349-28-1Relevant articles and documents

A novel access to 2-aminofuranones via cyclization of functionalized γ-hydroxy-α,β-butenoates derived from N-hydroxybenzotriazole esters of α-hydroxy acids

Athanasellis, Giorgos,Detsi, Anastasia,Prousis, Kyriakos,Igglessi-Markopoulou, Olga,Markopoulos, John

, p. 2015 - 2022 (2003)

The reaction between the N-hydroxybenzotriazole esters of substituted glycolic acids and alkyl cyanoacetates or malononitrile leads to the synthesis of γ-hydroxy-functionalized butenoates which are cyclized under mild conditions to the corresponding 2-amino-3,5-disubstituted-4-furanones. That the products are optically active is confirmed by measurements of their optical rotations. On the other hand, replacement of N-hydroxybenzotriazole by N-hydroxysuccinimide might lead to by-products depending on the functionalized glycolic acid used.

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