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1267990-85-1

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1267990-85-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1267990-85-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,7,9,9 and 0 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1267990-85:
(9*1)+(8*2)+(7*6)+(6*7)+(5*9)+(4*9)+(3*0)+(2*8)+(1*5)=211
211 % 10 = 1
So 1267990-85-1 is a valid CAS Registry Number.

1267990-85-1Downstream Products

1267990-85-1Relevant articles and documents

Deacetylcolchicine deriv.

-

, (2016/10/08)

Provided are 4-modified colchicine compounds and medicines using the same. Specifically provided are colchicine derivatives represented by general formula (1), salts thereof, and solvates of the same. In general formula (1), R1 is a halogen atom, a hydroxyl group, a nitro group, an amino group, or a mono-, di- or tri-fluoromethyl group; R2, R3 and R4 are each a methoxy group or a hydroxyl group, or alternatively R2 and R3, or R3 and R4 together represent a methylenedioxy group; R5 and R6 may be the same or different and are each a hydrogen atom, a C1-6 alkyl group, an arylalkyl group, a C2-6 alkenyl group, -COR7, -COOR8, -SO2R9, -CONR10R11, or -CSNR12R13, or alternatively R5 and R6 together with the nitrogen atom to which R5 and R6 are bonded may form a three- to seven-membered cyclic amino group; R7 is a C1-6 alkyl group or the like; R8 is a C1-6 alkyl group or the like; R9 is a C1-6 alkyl group or the like; R10 and R11 may be the same or different and are each a hydrogen atom, a C1-6 alkyl group, or the like; and R12 and R13 may be the same or different and are each a hydrogen atom, an alkyl group, or the like.

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