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75339-70-7

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75339-70-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75339-70-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,3,3 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 75339-70:
(7*7)+(6*5)+(5*3)+(4*3)+(3*9)+(2*7)+(1*0)=147
147 % 10 = 7
So 75339-70-7 is a valid CAS Registry Number.

75339-70-7Relevant articles and documents

Determination of Neutral Manufacturing Impurities in Heroin by Capillary Gas Chromatography with Electron Capture Detection after Reduction with Lithium Aluminum Hydride and Derivatization with Heptafluorobutyric Anhydride

Moore, James M.,Allen, Andrew C.,Cooper, Donald A.

, p. 1003 - 1007 (1986)

Neutral byproducts associated with the manufacture of illicit heroin are many and include meconin, 4-acetoxy-3,6-dimethoxyphenanthrene, N,O6-diacetylnorcodeine, 4-acetoxy-3,6-dimethoxy-5-phenanthrene, N,O3,O6-triacetylnormorphine, and 4-acetoxy-3,6-dimethoxy-8-phenanthrene.These N- and O-acetylated impurities, and meconin, are easily isolated from the bulk heroin matrix, after which they are subjected to reduction with lithium aluminum hydride (LiAlH4) followed by derivatization with heptafluorobutyric anhydride (HFBA) in the presence of pyridine.The resultant haptafluorobutyryl (HFB) electrophiles are detected on-column at picogram (pg) levels by using capillary column gas chromatography/electron capture detection (CC/GC/ECD) in the splitless mode.The method is applicable for the in-depth analyses of crudely processed and highly refined heroin samples.

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