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118512-04-2

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118512-04-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 118512-04-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,5,1 and 2 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 118512-04:
(8*1)+(7*1)+(6*8)+(5*5)+(4*1)+(3*2)+(2*0)+(1*4)=102
102 % 10 = 2
So 118512-04-2 is a valid CAS Registry Number.

118512-04-2Relevant articles and documents

Pteridines LXXXV. Chemical Synthesis of Deoxysepiapterin and 6-Acylpteridines by Acyl Radical Substitution Reactions

Baur, Ralph,Sugimoto, Takashi,Pfleiderer, Wolfgang

, p. 531 - 543 (2007/10/02)

A new synthesis of deoxysepiapterin (2), one of the two yellow eye pigments of the Drosophila mutant sepia, is described.The synthetic approach makes use of a homolytic nucleophilic acylation of 7-(alkylthio)pteridine derivatives (11, 13, 15, 18, 20) leading to the corresponding 6-acyl derivatives (21, 27).Desulfurizations have been achieved for the first time in the pteridine series using Raney-Co, Raney-Cu, or Cu-Al alloy in alkaline medium.Besides cleavage of the C(7)-S bond, further reductions of the C=O group at C(6) and the C(7)=N(8) bond are detected as side reactions leading to 6-(1-hydroxyalkyl) (34, 35, 42, 43) and 6-acyl-7,8-dihydro derivatives (2, 36, 37), respectively.The newly synthesized compounds have been characterized by chemical analysis, pK determination, UV and 1H-NMR spectra.

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