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1262590-20-4

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1262590-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1262590-20-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,2,5,9 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1262590-20:
(9*1)+(8*2)+(7*6)+(6*2)+(5*5)+(4*9)+(3*0)+(2*2)+(1*0)=144
144 % 10 = 4
So 1262590-20-4 is a valid CAS Registry Number.

1262590-20-4Relevant articles and documents

CHROMENE COMPOUND

-

, (2012/06/05)

A chromene compound having a skeleton represented by the following formula (1) and exhibiting double peak characteristic: wherein Z is a group represented by any one of the following formulas: n is an integer of 1 to 3, when n is 2 or 3, Z's may be the same or different, with the proviso that when n is 1, Z cannot be -CH2-, and when n is 2 or 3, Z's cannot be -CH2- at the same time; R1 is an electron absorbing group having a Hammett constant σp of more than 0, with the proviso that when there are a plurality of R1's, R1's may be the same or different; and X and Y are each independently an oxygen atom or =NR2, with the proviso that X and Y cannot be oxygen atoms at the same time.

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