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155589-88-1

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155589-88-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155589-88-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,5,8 and 9 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 155589-88:
(8*1)+(7*5)+(6*5)+(5*5)+(4*8)+(3*9)+(2*8)+(1*8)=181
181 % 10 = 1
So 155589-88-1 is a valid CAS Registry Number.

155589-88-1Relevant articles and documents

Total synthesis of (+)- and (-)-neopyrrolomycins, chlorinated phenylpyrrole antibiotics

Tatsuta,Itoh

, p. 1449 - 1455 (1994)

The first total synthesis of (+)- and (-)-neopyrrolomycins (11a and 11b) is detailed based on regioselective chlorinations of 3,5-dichloroanisole (2) and 1-(2,3,4-trichloro-6-methoxyphenyl)-1H-pyrrole-2-carboxylic acid (8) with isocyanuric trichloride, followed by optical resolution of racemic neopyrrolomycin (11) with N-(p-tolylsulfonyl)-L-phenylalanyl chloride. Several analogs (21-25) have been prepared from the intermediates, and the structure-activity relationships are also discussed.

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