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104669-20-7

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104669-20-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 104669-20-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,6,6 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 104669-20:
(8*1)+(7*0)+(6*4)+(5*6)+(4*6)+(3*9)+(2*2)+(1*0)=117
117 % 10 = 7
So 104669-20-7 is a valid CAS Registry Number.

104669-20-7Relevant articles and documents

STUDIES ON INDIAN MEDICINAL PLANTS : PART 91 - STRUCTURE AND SYNTHESIS OF ALAMARIDINE. A NOVEL 5-METHYLBENZOPYRIDOQUINOLIZINE ALKALOID FROM ALANGIUM LAMARCKII

Bhattacharjya, Anup,Mukhopadhyay, Ranjan,Sinha, Radhika Ranjan,Ali, Esahak,Pakrashi, Satyesh C.

, p. 3477 - 3488 (2007/10/02)

The structure of alamaridine (1), a novel benzopyridoquinolizine alkaloid, was established by spectral data.However, its stereochemistry could only be determined now by a total synthesis involving the key cyclisation of an 1-methyl-2-pyridylmethyl-3,4-dihydroisoquinolinium salt 19a in presence of pivaloyl chloride and triethylamine.O-Benzyldehydroalamaridine thus formed was reduced by sodium cyanoborohydride and then deprotected to obtain alamaridine (1) and 5-epi-alamaridine (26).Isoalamaridine (27) and its 5-epimer (28) were also synthesised following the same route.

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