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90736-63-3

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90736-63-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90736-63-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,7,3 and 6 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 90736-63:
(7*9)+(6*0)+(5*7)+(4*3)+(3*6)+(2*6)+(1*3)=143
143 % 10 = 3
So 90736-63-3 is a valid CAS Registry Number.

90736-63-3Relevant articles and documents

A convenient synthesis of Δ7,8-Morphinan-6-one and its direct oxidation to 14-hydroxy-Δ7,8-morphinan-6-one

Passarella, Daniele,Consonni, Alessandra,Giardini, Alessandra,Lesma, Giordano,Silvani, Alessandra

, p. 1981 - 1983 (2007/10/03)

Synthesis of Δ7,8-morphinan-6-one by Grewe cyclization and bromoketalization reaction as crucial steps is described. Introduction of a hydroxyl group at 14-position is demonstrated by direct oxidation with MnO2 in the presence of silica gel.

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