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252987-03-4

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252987-03-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 252987-03-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,2,9,8 and 7 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 252987-03:
(8*2)+(7*5)+(6*2)+(5*9)+(4*8)+(3*7)+(2*0)+(1*3)=164
164 % 10 = 4
So 252987-03-4 is a valid CAS Registry Number.

252987-03-4Relevant articles and documents

Transformation of vitamin B6 to (+)-deoxypyridinoline, a useful biochemical marker for diagnosis of bone diseases

Adamczyk, MacIej,Akireddy, Srinivasa Rao,Reddy, Rajarathnam E.

, p. 2379 - 2390 (2000)

A versatile chiral synthesis of the cross-link (+)-deoxypyridinoline (Dpd, 2) was achieved starting from vitamin B6 (7). The key steps in the synthesis of (+)-2 are transformation of B6 (7) to the chloride (3d) and construction of three α-amino acid chains by utilizing (R)-(-)-Schollkopf's reagent (4), Wittig reagent (R)-(-)-5, and iodide (5)-(-)-6. (+)-Dpd (2) is a degradation product of bone collagen and has been found to be a useful marker for diagnosis of osteoporosis and other metabolic bone diseases. (C) 2000 Elsevier Science Ltd.

HIV INTEGRASE INHIBITORS FROM PYRIDOXINE

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Page/Page column 56, (2009/12/28)

The present invention relates to pyridoxine (vitamin B6) derived compounds of formula (I), pharmaceutically acceptable salts, or solvates thereof, wherein R1, R2, R4, A, L B1 and B2 are as defined in the specification, and pharmaceutical compositions comprising the compounds. Compounds of formula (I) inhibit Human Immunodeficiency Virus (HΙV)-integrase enzyme and are useful for preventing and treating HIV infection and AIDS.

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