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98977-18-5

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98977-18-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 98977-18-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,9,7 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 98977-18:
(7*9)+(6*8)+(5*9)+(4*7)+(3*7)+(2*1)+(1*8)=215
215 % 10 = 5
So 98977-18-5 is a valid CAS Registry Number.

98977-18-5Relevant articles and documents

Synthesis of Hydrocarbon-Strapped Porphyrins Containing Quinone and Phenolic Groups

Morgan, Brian,Dolphin, David

, p. 5364 - 5374 (2007/10/02)

A general synthesis of strapped porphyrins is described and is illustrated for porphyrins bearing quinone and phenol groups in the bridging strap, which is exclusively a polymethylene chain.The NMR and optical spectra of the strapped porphyrins are discussed.

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