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522622-93-1

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522622-93-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 522622-93-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,2,2,6,2 and 2 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 522622-93:
(8*5)+(7*2)+(6*2)+(5*6)+(4*2)+(3*2)+(2*9)+(1*3)=131
131 % 10 = 1
So 522622-93-1 is a valid CAS Registry Number.

522622-93-1Downstream Products

522622-93-1Relevant articles and documents

Synthesis of radiolabeled O6-benzylguanine derivatives as new potential PET tumor imaging agents for the DNA repair protein O6-alkylguanine-DNA alkyltransferase

Zheng, Qi-Huang,Liu, Xuan,Fei, Xiangshu,Wang, Ji-Quan,Ohannesian, David W.,Erickson, Leonard C.,Stone, K. Lee,Martinez, Tanya D.,Miller, Kathy D.,Hutchins, Gary D.

, p. 1239 - 1252 (2007/10/03)

Novel radiolabeled O6-benzylguanine derivatives, 2-amino-6-O-[11C]-[(methoxymethyl)benzyloxy]-9-benzyl purines ([11C]p-O6AMBP, 1a; [11C]m-O6-AMBP, 1b; [11C]o-O6-AMBP, 1c), have been synthesized for evaluation as new potential positron emission tomography (PET) tumor imaging agents for the DNA repair protein, O6-alkylguanine-DNA alkyltransferase (AGT). The appropriate precursors for radiolabeling were obtained in three steps from starting material 2-amino-6-chloropurine with moderate to excellent chemical yields. Tracers were prepared by O-[11C]methylation of hydroxymethyl precursors using [11C]methyl triflate. Pure target compounds were isolated by solid-phase extraction (SPE) purification procedure in 45-60% radiochemical yields (decay corrected to the end of bombardment), and a synthesis time of 20-25 min. Copyright

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