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dimethyl 2,7-diethynyl-2',4a'-dimethyl-4a'H-spiro[fluorene-9,5'-pyrrolo[1,2-b]pyridazine]-6',7'-dicarboxylate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1133809-77-4

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1133809-77-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1133809-77-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,3,8,0 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1133809-77:
(9*1)+(8*1)+(7*3)+(6*3)+(5*8)+(4*0)+(3*9)+(2*7)+(1*7)=144
144 % 10 = 4
So 1133809-77-4 is a valid CAS Registry Number.

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