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130557-53-8

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130557-53-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 130557-53-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,5,5 and 7 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 130557-53:
(8*1)+(7*3)+(6*0)+(5*5)+(4*5)+(3*7)+(2*5)+(1*3)=108
108 % 10 = 8
So 130557-53-8 is a valid CAS Registry Number.

130557-53-8Downstream Products

130557-53-8Relevant articles and documents

PORPHYRINS AND THEIR DERIVATIVES XII. SYNTHESIS OF ISOMERIC FORMYLPHENYLPORPHYRINS

Ishkov, Yu. V.,Zhilina, Z. I.

, p. 1156 - 1160 (2007/10/02)

Isomeric mono(o-, m-, p-cyanophenyl)triphenylporphyrins were synthesized by the condensation of a mixture of aldehydes (benzaldehyde-cyanobenzaldehyde, 4:1) with pyrrole in xylene in the presence of monochloroactic acid.Reduction of the para and meta isomers of the zinc complex of cyanoporphyrin with sodium triethoxyaluminohydride in THF and of the ortho isomer by aluminum hydride gives the corresponding formyl derivatives.

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