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1025903-77-8

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1025903-77-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1025903-77-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,5,9,0 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1025903-77:
(9*1)+(8*0)+(7*2)+(6*5)+(5*9)+(4*0)+(3*3)+(2*7)+(1*7)=128
128 % 10 = 8
So 1025903-77-8 is a valid CAS Registry Number.

1025903-77-8Downstream Products

1025903-77-8Relevant articles and documents

Synthesis and biological activity of folic acid and methotrexate analogues containing L-threo-(2S,4S)-4-fluoroglutamic acid and DL-3,3-difluoroglutamic acid

Hart, Barry P.,Haile, William H.,Licato, Nicholas J.,Bolanowska, Wanda E.,McGuire, John J.,Coward, James K.

, p. 56 - 65 (1996)

The stereospecific syntheses of L-threo-γ-fluoromethotrexate (1t) and L- threo-γ-fluorofolic acid (3t) are reported. Compounds 1t and 3t have no substrate activity with folylpoly-γ-glutamate synthetase isolated from CCRF- CEM human leukemia cells, and compound It inhibits human dihydrofolate reductase at similar levels as methotrexate. The synthesis of DL-3,3- difluoro-glutamic acid (6) and its incorporation into DL-β,β-difluorofolic acid (4) are also reported. Compound 4 acts as a better substrate for human CCRF-CEM folylpoly-γ-glutamate synthetase than folic acid (V/K = ca. 7-fold greater). Thus, replacement of the glutamate moiety of methotrexate and folic acid with 4-fluoroglutamic acid and 3,3-difluoroglutamic acid results in folates and antifolates with altered polyglutamylation activity.

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