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187242-51-9

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187242-51-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187242-51-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,2,4 and 2 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 187242-51:
(8*1)+(7*8)+(6*7)+(5*2)+(4*4)+(3*2)+(2*5)+(1*1)=149
149 % 10 = 9
So 187242-51-9 is a valid CAS Registry Number.

187242-51-9Downstream Products

187242-51-9Relevant articles and documents

Conversion of marcfortine A to paraherquamide A via paraherquamide B. The first formal synthesis of paraherquamide A

Lee, Byung H.,Clothier, Michael F.

, p. 1795 - 1798 (1997)

The paraherquamides and marcfortines represent a novel class of anthelmintics. The sole structural difference between paraherquamide A and marcfortine A occurs in ring G. We synthesized paraherquamide B from marcfortine A in six steps. Paraherquamide A was then prepared from paraherquamide B in seven steps. This represents the first formal synthesis of paraherquamide A.

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