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500005-28-7

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500005-28-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 500005-28-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,0,0 and 5 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 500005-28:
(8*5)+(7*0)+(6*0)+(5*0)+(4*0)+(3*5)+(2*2)+(1*8)=67
67 % 10 = 7
So 500005-28-7 is a valid CAS Registry Number.

500005-28-7Downstream Products

500005-28-7Relevant articles and documents

Synthesis and irradiation of vitamin-B12-derived complexes incorporating peripheral G·C base pairs

Sun, Fang-Ping,Darbre, Tamis

, p. 3002 - 3018 (2007/10/03)

The vitamin-B12 derivative 11, incorporating a peripheral N4-acetylcytosine moiety, was alkylated under reductive conditions with 2-(iodomethyl)-2-methylmonothiomalonate 8 bearing the complementary guanine moiety. The reaction yielded a mixture of vitamin-B12-derived complexes with variations in the cytosine moiety: products 16-18 with a cytosine, a N4-acetylated cytosine, and a N4-acetylated reduced cytosine moiety were formed (see Scheme 5). The complexes were photolyzed in CHCl3/MeCN to yield the dimethylmalonate derivative 22 (Scheme 6) but not the rearranged succinate, in contrast to the results obtained earlier with complexes incorporating the A · T base pair (see Scheme 1).

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