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199585-08-5

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199585-08-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 199585-08-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,5,8 and 5 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 199585-08:
(8*1)+(7*9)+(6*9)+(5*5)+(4*8)+(3*5)+(2*0)+(1*8)=205
205 % 10 = 5
So 199585-08-5 is a valid CAS Registry Number.

199585-08-5Relevant articles and documents

Synthesis of halogenated phenols by directed ortho-lithiation and ipso-iododesilylation reactions of O-aryl N-isopropylcarbamates

Kauch, Matthias,Hoppe, Dieter

, p. 1578 - 1589 (2007/10/03)

The regioselective synthesis of halogenated phenols via directed ortho-lithiation reactions of in situ N-silylated O-aryl N-isopropylcarbamates is reported. This protocol is complemented by ipso-iododesilylation reactions of C-silylated carbamates and iodine-magnesium exchange reactions, which are facilitated by the adjacent carbamoyl group. These methods provide an entry into a series of o-fluoro-, o-iodo-, and o,o′-diiodophenols in high yields which are otherwise difficult to obtain. Georg Thieme Verlag Stuttgart.

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