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15043-17-1

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15043-17-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15043-17-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,0,4 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 15043-17:
(7*1)+(6*5)+(5*0)+(4*4)+(3*3)+(2*1)+(1*7)=71
71 % 10 = 1
So 15043-17-1 is a valid CAS Registry Number.

15043-17-1Upstream product

15043-17-1Downstream Products

15043-17-1Relevant articles and documents

A stereostructural study of 17-hydroxylupanine and its perchlorate

Thiel, Jacek,Boczon, Wladyslaw,Wysocka, Waleria

, p. 1073 - 1081 (2007/10/03)

The bisquinolizidine carbinolamine 17-hydroxylupanine was synthesized de novo from lupanine using 2,3-dichloro-5,6-dicyano-1,4-benzoquinone; its structure was established by NMR techniques. The equatorial position of the hydroxy group as well as the prevailing boat form of ring C were determined. As expected, the carbinolamine converted into the C17=N16 anhydronium perchlorate upon treatment with HClO4. NMR analysis of the salt revealed a conformational equilibrium within rings A and D, whereas rings B and C remain rigid.

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