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134040-39-4

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134040-39-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134040-39-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,0,4 and 0 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 134040-39:
(8*1)+(7*3)+(6*4)+(5*0)+(4*4)+(3*0)+(2*3)+(1*9)=84
84 % 10 = 4
So 134040-39-4 is a valid CAS Registry Number.

134040-39-4Relevant articles and documents

Studies of the synthesis of 1,2-cis-(cyclic carbamates) of α-D-aldopyranosylamines

Kovacs, Jozsef,Pinter, Istvan,Toth, Gabor,Gyoergydeak, Zoltan,Koell, Peter

, p. 95 - 106 (1993)

Reaction of α-D-glucopyranosyl azide with triphenylphosphine and carbon dioxide gave 1-N,2-O-carbonyl-α-D-glucopyranosylamine (7) and its α-D-furanose analogue (1), and 1-N,3-O-carbonyl-α-D-allofuranosylamine (15) and its α-D-pyranose analogue (17).Similarly, α-D-xylopyranosyl azide gave 1-N,2-O-carbonyl-α-D-xylopyranosylamine (9) and its α-D-furanose analogue (3), and 1-N,3-O-carbonyl-α-D-ribopyranosylamine (19) and its β-D-xylopyranose analogue (21).The structures of the products and their acetylated derivatives were established by 1H and 13C NMR spectroscopy. 1-N,3-O-Carbonyl-β-D-xylopyranosylamine (21) was obtained from β-D-xylopyranosyl azide when spontaneous rearrangement of the 1,2-(cyclic carbamate) 5 into 21 occurred in water.

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