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4-Bromo-benzoic acid (4aR,5aS,9R,10aS,11R,11aR)-9-[(E)-3-hydroxy-4-(4-methoxy-benzyloxy)-but-1-enyl]-2,2-dimethyl-4,4a,5a,6,9,10a,11,11a-octahydro-1,3,5,10-tetraoxa-cyclohepta[b]naphthalen-11-yl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

188050-74-0

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188050-74-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188050-74-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,0,5 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 188050-74:
(8*1)+(7*8)+(6*8)+(5*0)+(4*5)+(3*0)+(2*7)+(1*4)=150
150 % 10 = 0
So 188050-74-0 is a valid CAS Registry Number.

188050-74-0Relevant academic research and scientific papers

Synthetic study of ciguatoxin. Absolute configuration of the C2 hydroxy group

Oguri, Hiroki,Hishiyama, Shojiro,Sato, Ohki,Oishi, Tohru,Hirama, Masahiro,Murata, Michio,Yasumoto, Takeshi,Harada, Nabuyuki

, p. 3057 - 3072 (2007/10/03)

The absolute stereochemistry of the secondary alcohol of the 1,2-dihydroxybutenyl substituent of ciguatoxin (1) was shown to be S by comparing (he split CD curve of ciguatoxin tetra-p-bromobenzoate (2) with those of di- and tri-p-bromobenzoates of AB ring fragments that were synthesized enaotioselectively.

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