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139003-86-4

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139003-86-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139003-86-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,0 and 3 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 139003-86:
(8*1)+(7*3)+(6*9)+(5*0)+(4*0)+(3*3)+(2*8)+(1*6)=114
114 % 10 = 4
So 139003-86-4 is a valid CAS Registry Number.

139003-86-4Downstream Products

139003-86-4Relevant articles and documents

TIN (IV) CHLORIDE-PROMOTED REACTIONS OF α-HYDROXY NITRILES WITH β-DICARBONYL COMPOUNDS. SYNTHESIS OF 4-AMINO-2,5-DIHYDRO-2-FURANONES AND THEIR CONVERSION INTO TETRONIC ACID DERIVATIVES

Veronese, Augusto C.,Callegari, Rosella,Bertazzo, Antonella

, p. 2205 - 2215 (2007/10/02)

β-Keto esters and β-diesters react with α-hydroxy nitriles in the presence of stoichiometric amounts of tin(IV) chloride to give 3-acyl-4-amino-2(5H)-furanones (2) and ethyl 4-amino-2,5-dihydro-2-oxofuran-3-carboxylates (3).The acyldihydrofuranones (2) can be converted into acyltetronic acid derivatives (6) while the ethyl furan-3-carboxylates (3) can be converted into tetronic acids (8).

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