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73908-17-5

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73908-17-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73908-17-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,9,0 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 73908-17:
(7*7)+(6*3)+(5*9)+(4*0)+(3*8)+(2*1)+(1*7)=145
145 % 10 = 5
So 73908-17-5 is a valid CAS Registry Number.

73908-17-5Relevant articles and documents

Studies on pyrimidine-annulated heterocycles: A short synthesis of novel 6,9-disubstituted cyclohepta[b]pyrimido[5,4-d]pyrrole-8(6h),10(9H)-diones

Nitta, Makoto,Tajima, Yohei

, p. 651 - 654 (2000)

A number of 6,9-disubstituted cyclohepta[b]pyrimido[5,4-d]pyrrole- 8(6H),10(9H)-dione derivatives have been synthesized in good to moderate yields by the reaction of 6-amino-3-methyluracil derivatives with 2- chlorotropone in an enamine-alkylation process

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