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194921-12-5

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194921-12-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 194921-12-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,9,2 and 1 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 194921-12:
(8*1)+(7*9)+(6*4)+(5*9)+(4*2)+(3*1)+(2*1)+(1*2)=155
155 % 10 = 5
So 194921-12-5 is a valid CAS Registry Number.

194921-12-5Downstream Products

194921-12-5Relevant articles and documents

Cyclic amic acid derivatives

-

, (2008/06/13)

PCT No. PCT/JP97/00303 Sec. 371 Date Aug. 4, 1998 Sec. 102(e) Date Aug. 4, 1998 PCT Filed Feb. 7, 1997 PCT Pub. No. WO97/29078 PCT Pub. Date Aug. 14, 1997The present invention relates to a compound of the formula (I), or its pharmaceutically acceptable salt or ester: wherein Ar1 is an aryl group or a heteroaromatic ring group; Ar is a group of the formula each of Ar2 and Ar3 is an aryl group or a heteroaromatic ring group; Cy is an aryl group, a heteroaromatic ring group or an aliphatic ring group which may contain one or two oxygen atoms; A1 is a C1-4 chain hydrocarbon group; m is an integer of from 1 to 6; each of n and p is an integer of from 0 to 3; Q1 is a single bond, a group of the formula -CH2O-, -OCH2-, -CH2S- or -SCH2-, or a C1-6 chain hydrocarbon group; Q2 is a single bond or a group of the formula -(CH2)m- or -(CH2)n-W-(CH2)p-; Q3 is a single bond, an oxygen atom, a sulfur atom, a methylene group, a vinylene group or a group of the formula -CO-, -NH-, -COO-, -OCO-, -CH2CH2-, -OCH2-, -SCH2-, -CH2O-, -CH2S-, -NHCO- or -CONH-; R1 is a lower alkyl group; each of R2 and R3 is a hydrogen atom, a hydroxyl group or a lower alkyl group; W is an oxygen atom, a sulfur atom, a vinylene group or an ethynylene group; x is an integer of from 0 to 2; and y is 0 or 1; and an antitumor agent containing it as an active ingredient and intermediates for the production thereof.

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