43111-44-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 43111-44-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,3,1,1 and 1 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 43111-44:
(7*4)+(6*3)+(5*1)+(4*1)+(3*1)+(2*4)+(1*4)=70
70 % 10 = 0
So 43111-44-0 is a valid CAS Registry Number.
InChI:InChI=1/C14H13N5O2/c1-19(11-4-2-9(3-5-11)14(20)21)8-10-7-17-13(16)12(6-15)18-10/h2-5,7H,8H2,1H3,(H2,16,17)(H,20,21)
43111-44-0Relevant articles and documents
Synthesis and biological activity of the 2-desamino and 2-desamino-2-methyl analogues of aminopterin and methotrexate
Rosowsky,Forsch,Moran,Freisheim
, p. 227 - 234 (2007/10/02)
The previously undescribed 2-desamino and 2-desamino-2-methyl analogues of aminopterin (AMT) and methotrexate (MTX) were synthesized from 2-amino-5-(chloromethyl)pyrazine-3- carbonitrile. The AMT analogues were obtained via a three-step sequence consistin