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84346-57-6

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84346-57-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84346-57-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,3,4 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 84346-57:
(7*8)+(6*4)+(5*3)+(4*4)+(3*6)+(2*5)+(1*7)=146
146 % 10 = 6
So 84346-57-6 is a valid CAS Registry Number.

84346-57-6Downstream Products

84346-57-6Relevant articles and documents

SYNTHESIS OF TETRAPHENYLPORPHINES WITH ACTIVE GROUPS IN THE PHENYL RINGS. 5. TETRA(CARBOXYMETHYLENOXYPHENYL)PORPHINES AND THEIR ETHYL ESTERS.

Syrbu, S. A.,Semeikin, A. S.,Berezin, B. D.,Koifman, O. I.

, p. 1149 - 1153 (1989)

Tetra(carboxymethylenoxyphenyl)porphines which are soluble in bases are prepared by hydrolysis of the ethyl esters of tetra(carboxymethylenoxyphenyl)porphines.The starting ethyl esters of the tetra(carboxymethylenoxyphenyl)porphines were synthesized by alkylation of tetra(oxyphenyl)porphines with ethylchloroacetate, as well as by condensation of pyrrole with ethyl esters of formylphenoxyacetic acids.

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