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291535-00-7

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291535-00-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 291535-00-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,1,5,3 and 5 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 291535-00:
(8*2)+(7*9)+(6*1)+(5*5)+(4*3)+(3*5)+(2*0)+(1*0)=137
137 % 10 = 7
So 291535-00-7 is a valid CAS Registry Number.

291535-00-7Downstream Products

291535-00-7Relevant articles and documents

Tetrazoles: XXXVIII. Reactions of 5-methylthio-and 5-methylsulfonyl-1-(4-nitrophenyl)tetrazoles with O-nucleophiles

Koreneva,Koldobskii

, p. 1511 - 1515 (2007/10/03)

5-Methylthio-1-(4-nitrophenyl)tetrazole reacts with O-nucleophiles such as HO- and AlkO- to form 1-(4-nitrophenyl)tetrazol-5(4H)-one and 5-alkoxy-1-(4-nitrophenyl)tetrazoles, respectively. Replacement of the methylthio group in the substrate by methylsulfonyl group strongly increases its reactivity, so that 5-methylsulfonyl-1-(4-nitrophenyl)tetrazole is a promising starting compound for synthesis of functionally substituted tetrazoles.

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