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1257541-93-7

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1257541-93-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257541-93-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,5,4 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1257541-93:
(9*1)+(8*2)+(7*5)+(6*7)+(5*5)+(4*4)+(3*1)+(2*9)+(1*3)=167
167 % 10 = 7
So 1257541-93-7 is a valid CAS Registry Number.

1257541-93-7Relevant articles and documents

Tuned-affinity bivalent ligands for the characterization of opioid receptor heteromers

Harvey, Jessica H.,Long, Darcie H.,Whistler, Jennifer L.,England, Pamela M.

, p. 640 - 644,5 (2020/08/31)

Opioid receptors, including the μ- and δ-opioid receptors (MOR and DOR), are important targets for the treatment of pain. Although there is mounting evidence that these receptors form heteromers, the functional role of the MOR/DOR heteromer remains unresolved. We have designed and synthesized bivalent ligands as tools to elucidate the functional role of the MOR/DOR heteromer. Our ligands (L2 and L4) are comprised of a compound with low affinity at the DOR tethered to a compound with high affinity at the MOR, with the goal of producing ligands with "tuned affinity" at MOR/DOR heteromers as compared to DOR homomers. Here, we show that both L2 and L4 demonstrate enhanced affinity at MOR/DOR heteromers as compared to DOR homomers, thereby providing unique pharmacological tools to dissect the role of the MOR/DOR heteromer in pain.

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