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141989-52-8

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141989-52-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141989-52-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,9,8 and 9 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 141989-52:
(8*1)+(7*4)+(6*1)+(5*9)+(4*8)+(3*9)+(2*5)+(1*2)=158
158 % 10 = 8
So 141989-52-8 is a valid CAS Registry Number.

141989-52-8Downstream Products

141989-52-8Relevant articles and documents

THE SYNTHESIS OF OXOAPORPHINES AND PHENANTHRENEDIONES FROM 7-HYDROXYDEHYDRONORAPORPHINES

Costanza, Carl,Lenz, George R.,Lessor, Ralph A.

, p. 465 - 478 (2007/10/02)

Oxidation of 7-hydroxydehydronoraporphines with air over platinum or palladium yields oxoaporphines in high yield.When the nitrogen is acylated, oxidation with air in the presence of copper ions causes an oxidative ring fragmentation to form phenanthrenediones, also in high yield.

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