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137685-75-7

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137685-75-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137685-75-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,6,8 and 5 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 137685-75:
(8*1)+(7*3)+(6*7)+(5*6)+(4*8)+(3*5)+(2*7)+(1*5)=167
167 % 10 = 7
So 137685-75-7 is a valid CAS Registry Number.

137685-75-7Downstream Products

137685-75-7Relevant articles and documents

Xanthines with C8 chiral substituents as potent and selective adenosine A1 antagonists.

Peet,Lentz,Dudley,Ogden,McCarty,Racke

, p. 4015 - 4020 (2007/10/02)

Several 8-substituted 1,3-dipropylxanthines were synthesized, and their receptor binding affinities at adenosine A1 and A2 receptors were measured. When enantiomeric pairs of compounds were examined, the R enantiomers were significantly more potent than the corresponding S enantiomers. The most potent compound at the A1 receptor was (R)-3,7-dihydro-8-(1-methyl-2-phenylethyl)-1,3-dipropyl-1H-purine-2,6-di one (5a; MDL 102,503), whose Ki value at the A1 receptor was 6.9 nM. However, a more selective compound was (R)-3,7-dihydro-8-(1-phenylpropyl)-1,3-dipropyl-1H-purine-2,6-dione (5d; MDL 102,234), which had a Ki value of 23.2 nM at the A1 receptor and an A2/A1 ratio of 153.

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