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87721-24-2

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87721-24-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87721-24-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,7,2 and 1 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 87721-24:
(7*8)+(6*7)+(5*7)+(4*2)+(3*1)+(2*2)+(1*4)=152
152 % 10 = 2
So 87721-24-2 is a valid CAS Registry Number.

87721-24-2Relevant articles and documents

Pyrrole chemistry. XXVI. A synthesis of porphobilinogen from pyrrole

Demopoulos, Basil J.,Anderson, Hugh J.,Loader, Charles E.,Faber, Kurt

, p. 2415 - 2422 (2007/10/02)

A synthetic strategy has been developed which enables pyrrole to be used as the starting material for the synthesis of 2,3,4-trisubstituted pyrroles of the type used to construct porphyrins.The total synthesis of porphilinogen has been accomplished as a demostration of the applicability of the approach.

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