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40550-12-7

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40550-12-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40550-12-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,5,5 and 0 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 40550-12:
(7*4)+(6*0)+(5*5)+(4*5)+(3*0)+(2*1)+(1*2)=77
77 % 10 = 7
So 40550-12-7 is a valid CAS Registry Number.

40550-12-7Relevant articles and documents

Benzo[A] [phenazin-11-carboxamide derivatives and their use as joint inhibitors of topomerase I and II

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, (2008/06/13)

A compound which is a benzo[a]phenazine-11-carboxamide derivative of formula (I) wherein each of R1 to R4, which are the same or different, is selected from hydrogen, halogen, hydroxyl, C1-C6 alkoxy which is unsubstituted or substituted, heteroaryloxy, C1-C6 alkyl which is unsubstituted or substituted, nitro, cyano, azido, amidoxime, CO2R10, CON(R12)2, OCON(R12), SR10, SOR11, SO2(R11), SO2N(R12)2, N(R12)2, NR10SO2R11, N(SO2R11)2NR10(CH2)nCN, NR10COR11, OCOR11 or COR10; each of R5 to R7, which are the same or different, is selected from hydrogen, halogen, hydroxy, C1-C6 alkoxy, C1-C6 alkyl, SR10 and N(R12)2; Q is C1-C6 alkylene which is unsubstituted or substituted by (i) C1-C6 alkyl which is unsubstituted or substituted, (ii) hydroxy, provided that the hydroxy group is not, to either of the N atoms adjacent to Q in formula (I), (iii) CO2R10, or (iv) CON(R12); R1 and R9, which are the same or different, are each hydrogen or C1-C6 alkyl, or R8 and R9 together with the nitrogen atom to which they are attached form a saturated 5- or 6-membered N-containing heterocyclic ring which may include one additional heteroatom selected from O, N and S, or one of R8 and R9 is an alkylene chain optionally interrupted by O, N or S, which is attached to a carbon atom on the alkylene chain represented by Q to complete a saturated 5- or 6-membered N-containing heterocyclic ring as defined above; or a pharmaceutically acceptable salt thereof; with the proviso that at least one R1 to R4 is other than hydrogen. These compounds are inhibitors of topoisomerase I and/or topoisomerase II and can be used to treat tumours, including tumours which express MDR.

SYNTHESES OF AMINOTHIOL DERIVATIVES.

NISHIMURA,TAKAMATSU

, p. 944 - 955 (2007/10/04)

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