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187987-85-5

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187987-85-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187987-85-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,9,8 and 7 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 187987-85:
(8*1)+(7*8)+(6*7)+(5*9)+(4*8)+(3*7)+(2*8)+(1*5)=225
225 % 10 = 5
So 187987-85-5 is a valid CAS Registry Number.

187987-85-5Relevant articles and documents

New Anti-tumor Agents. 2. Benzopyranylamine Compounds

Jurd, Leonard

, p. 1919 - 1925 (2007/10/03)

Pyrrolidine, morpholine and piperidine derived Mannich bases of types 1-3 react with acetone, propionaldehyde and butyraldehyde to form 2-methyl and 3-methylbenzopyrans of types 4-8. Hydrolysis of these benzopyrans yields alcoholic benzopyrans which readily condense with a variety of amine, aniline and hydrazine derivatives to form diverse isomeric benzopyrans of types of 9 and 10. The benzopyrans 4-9 which contain a 3,4,5-trimethoxyphenyl ring are active anti-tumor agents, particularly against human breast, CNS and colon cancer cell lines, total growth inhibition of these tumors often occurring in vitro at concentrations as low as 10-5-10-6 moles/l. Because of their in vitro activities and unusual structures a number of these benzopyrans have been selected for in vivo Xenograft testing against breast and other susceptible human cancers.

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