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221043-13-6

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221043-13-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221043-13-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,0,4 and 3 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 221043-13:
(8*2)+(7*2)+(6*1)+(5*0)+(4*4)+(3*3)+(2*1)+(1*3)=66
66 % 10 = 6
So 221043-13-6 is a valid CAS Registry Number.

221043-13-6Relevant articles and documents

Pyrimidine nucleus-containing compound and a medicament containing the same for a blood oxygen partial pressure amelioration, and a method for preparing the same

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Referential example 1, (2010/01/30)

A pyrimidine nucleus-containing compound represented by the formula (I): wherein ring A represents the ring of the formula (a): in which R1is a nitro group, an amino group, a substituted amino group or a halogen atom, or the ring of the formula (b): in which R1′is the group such as an alkyl group or an alkenyl group; R2to R5independently represent the group such as an alkyl group or an alkenyl group; with the proviso that at least one of R2to R5is an alkenyl group, or acid addition salts thereof.

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