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50706-29-1

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50706-29-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 50706-29-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,0,7,0 and 6 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 50706-29:
(7*5)+(6*0)+(5*7)+(4*0)+(3*6)+(2*2)+(1*9)=101
101 % 10 = 1
So 50706-29-1 is a valid CAS Registry Number.

50706-29-1Relevant articles and documents

Isolation and Structure Elucidation of Ergokonin A and B; Two New Antifungal Sterol Antibiotics from Trichoderma koningii

Augustiniak, Hermann,Forche, Edgar,Reichenbach, Hans,Wray, Viktor,Graefe, Udo,Hoefle, Gerhard

, p. 361 - 366 (2007/10/02)

Isolation and structure elucidation by 2D-NMR spectroscopy of the two new antifungal sterol antibiotics ergokonin A (1) and B (2a) from Trichoderma koningii are described.The structures of 1 and 2a are derived from ergosterol and characterized by an 18-carboxy group.In addition ergokonin A (1) is esterified at the 3-hydroxy group with (2S,3S)-3-hydroxyleucine 3-O-sulfate (3c).In the course of structure elucidation of the amino acid residue the stereoisomers of 3-hydroxyleucine N-sulfamate and 3-O-sulfate (3b, c) have been synthesized and characterized by NMR spectroscopy.

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