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6175-26-4

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6175-26-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6175-26-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,1,7 and 5 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 6175-26:
(6*6)+(5*1)+(4*7)+(3*5)+(2*2)+(1*6)=94
94 % 10 = 4
So 6175-26-4 is a valid CAS Registry Number.

6175-26-4Relevant articles and documents

Synthetic method for preparing marine alkaloid Bacuacuacuanin-L intermediate

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Paragraph 0078-0080, (2020/07/13)

The invention discloses a synthesis method for preparing a marine alkaloid Baculiferin-L intermediate. According to the method, a novel synthesis route suitable for the Baculiferin-L intermediate is designed, which is started from a raw material, substitu

IONIZABLE CATIONIC LIPID FOR RNA DELIVERY

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Paragraph 0721; 0722; 0723; 0724; 0725, (2018/07/05)

What is described is a compound of formula I consisting of a compound in which R1 is a branched chain alkyl consisting of 10 to 31 carbons;R2 is a linear alkyl, alkenyl, or alkynyl consisting of 2 to 20 carbons, or a branched chain alkyl consisting of 10 to 31 carbons;L1 and L2 are the same or different, each a linear alkane of 1 to 20 carbons or a linear alkene of 2 to 20 carbons;X1 is S or O;R3 is a linear or branched alkylene consisting of 1 to 6 carbons; andR4 and R5 are the same or different, each a hydrogen or a linear or branched alkyl consisting of 1 to 6 carbons; or a pharmaceutically acceptable salt thereof.

Water-soluble xanthobilirubinic acids?

Dey, Sanjeev K.,Lightner, David A.

experimental part, p. 161 - 170 (2010/04/02)

Xanthobilirubinic acid, a model dipyrrinone for one-half of the bilirubin molecule in photochemical and metabolism studies, is more polar than bilirubin and insoluble in water and in chloroform. Replacing the β-alkyl substituents on the lactam ring of xanthobilirubinic acid with methyl-capped ethylene glycol, diethylene glycol, and triethylene glycol (PEG) groups steadily increased the water solubility of the pigment so that the last is completely soluble in both water and chloroform. Synthesized by base-catalyzed condensation of the corresponding methyl-capped 3,4-diPEG-pyrrolin-2-one with 3,5-dimethyl-4(2-ethoxycarbonylethyl)-2-formyl-1H-pyrrole, these new PEGylated analogs of xanthobilirubinic acid are yellow-colored dipyrrinones that form intermolecular hydrogen-bonded dimers in chloroform solution but are monomeric in methanol and water, as revealed by 1H NMR spectroscopy and vapor pressure osmometry. Methyl xanthobilirubinate has served as a synthetic precursor to bilirubinoids; its amphiphilic PEGylated analogs suggest a route to water-soluble bilirubinoids and biliverdinoids. Graphical abstract: [Figure not available: see fulltext.]

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