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198555-56-5

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198555-56-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 198555-56-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,5,5 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 198555-56:
(8*1)+(7*9)+(6*8)+(5*5)+(4*5)+(3*5)+(2*5)+(1*6)=195
195 % 10 = 5
So 198555-56-5 is a valid CAS Registry Number.

198555-56-5Downstream Products

198555-56-5Relevant articles and documents

5,6-Dihydropyrrolo[1,2-c]pyrimidine-1,3(2H,5H)-diones as annulated analogues of the anti-HIV compound MKC-442 (6-benzyl-1-(ethoxymethyl)-5-isopropyluracil)

Danel, Krzysztof,Pedersen, Erik B.,Nielsen, Claus

, p. 1021 - 1026 (2007/10/03)

Annulated analogues of the anti-HIV compound MKC-442 were synthesized from 6-benzoyl-5-ethyl-2,4-dimethoxypyrimidine (4) by reaction with Zn/NH4Cl and 3-bromopropene. The intermediate homoallylic alcohol is subjected to a ring closure reaction by treatment with bromine either directly or after O-benzylation to give 5,6-dihydropyrrolo[1,2-c]pyrimidinones. No activity against HIV was observed, neither for the annulated analogues nor the derivatives synthesized from 4. Only compound 4 showed activity against HIV-1.

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