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204510-68-9

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204510-68-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 204510-68-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,5,1 and 0 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 204510-68:
(8*2)+(7*0)+(6*4)+(5*5)+(4*1)+(3*0)+(2*6)+(1*8)=89
89 % 10 = 9
So 204510-68-9 is a valid CAS Registry Number.

204510-68-9Relevant articles and documents

2,4-diamino-6,7-dihydro-5?-cyclopentacf|pyrimidine analogues of trimethoprim as inhibitors of pneumocystis carinii and toxoplasma gondii dihydrofolate reductase

Rosowsky, Andre,Papoulis, Andrew T.,Queener, Sherry F.

, p. 913 - 918 (2007/10/03)

Three previously unreported (R,S)-2,4-diamino-5-[(3,4,5-trimethoxyphenyl)alkyl]-6,7-dihydro5.ff- cyclopenta[rf]pyrimidines 15a-c were synthesized as analogues of trimethoprim (TMP) and were tested as inhibitors of Pneumocystis carinii, Toxoplasma gondii,

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