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199170-74-6

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199170-74-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 199170-74-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,1,7 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 199170-74:
(8*1)+(7*9)+(6*9)+(5*1)+(4*7)+(3*0)+(2*7)+(1*4)=176
176 % 10 = 6
So 199170-74-6 is a valid CAS Registry Number.

199170-74-6Downstream Products

199170-74-6Relevant articles and documents

Addition of nucleophiles to 6-vinylpurines

veras, Anniken T.,Bakkestuen, Anne Kristin,Gundersen, Lise-Lotte,Rise, Frode

, p. 1116 - 1124 (2007/10/03)

6-Vinylpurines readily participate in nucleophilic addition reactions. Treatment with sodium salts of alcohols and thiols, as well as stabilised carbanions, results in clean conversion into a variety of functionalized purine derivatives. Additions performed in the presence of acid give 1:1 adducts together with dimeric purine products. Under acidic conditions the adduct first formed reacts further with another molecule of vinylpurine. Acta Chemica Scandinavica 1997.

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