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503603-58-5

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503603-58-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 503603-58-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,6,0 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 503603-58:
(8*5)+(7*0)+(6*3)+(5*6)+(4*0)+(3*3)+(2*5)+(1*8)=115
115 % 10 = 5
So 503603-58-5 is a valid CAS Registry Number.

503603-58-5Downstream Products

503603-58-5Relevant articles and documents

Substituted pentacene semiconductors

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Page/Page column 24-25, (2010/02/11)

Substituted pentacene compounds comprise at least one substituent selected from the group consisting of electron-donating substituents, halogen substituents, and combinations thereof; the substituent(s) each being bonded to a carbon atom of a terminal ring of pentacene, and being the only substituent(s); with the proviso that when the compound has only two substituents, both of which are methyl or alkoxy, and one substituent is bonded to the number 2 carbon atom, the other substituent, if methyl, is bonded to the number 1, 3, 4, 8, or 11 carbon atom and, if alkoxy, is bonded to the number 1, 3, 4, 8, 9, or 11 carbon atom; and with the further proviso that when the compound has only four substituents, all of which are alkoxy, the substituents are bonded to the numbers 2, 3, 9, and 10 carbon atoms.

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