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91843-70-8

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91843-70-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91843-70-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,8,4 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 91843-70:
(7*9)+(6*1)+(5*8)+(4*4)+(3*3)+(2*7)+(1*0)=148
148 % 10 = 8
So 91843-70-8 is a valid CAS Registry Number.

91843-70-8Upstream product

91843-70-8Downstream Products

91843-70-8Relevant articles and documents

Purines. LXXII. Oxidation of N6-alkyladenines with m-chloroperoxybenzoic acid leading to N6-alkyladenine 1-oxides

Itaya, Taisuke,Ogawa, Kazuo,Takada, Yasutaka,Fujii, Tozo

, p. 967 - 971 (1996)

Oxidations of N6-methyladenine (8a) and N6-benzyladenine (8b) with m- chloroperoxybenzoic acid (mcpba) in methanol have been found to afford the N(1)-oxides 7a,b in 36% and 35% yields, respectively. The structure of 7b has been established by leading it to N6-methoxyadenine (10) through O- methylation, Dimroth rearrangement, and nonreductive debenzylation. On the other hand, N6,N6-dimethyladenine (16) afforded the N(3)-oxide 17 in 40% yield on treatment with Mcpba in methanol. On the basis of these findings, together with data accumulated for N-oxidations of adenine, N(x)- monosubstituted adenines, and 6-substituted purines, the formation of hydrogen bonding between the 6-amino Nh and the carbonyl oxygen of a peroxycarboxylic acid may account for regioselective N(1)and N(7)-oxidations of adenine and N(x)-monosubstituted adenines.

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