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459-98-3

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459-98-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 459-98-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,5 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 459-98:
(5*4)+(4*5)+(3*9)+(2*9)+(1*8)=93
93 % 10 = 3
So 459-98-3 is a valid CAS Registry Number.

459-98-3Downstream Products

459-98-3Relevant articles and documents

Synthesis of 2-[(2-chloro-2′-[18F]fluoroethyl)amino]-2H-1, 3,2-oxazaphosphorinane-2-oxide (18F-fluorocyclophosphamide), a potential tracer for breast tumor prognostic imaging with PET

Lacan, Goran,Kesner, Amanda L.,Gangloff, Anne,Zheng, Lei,Czernin, Johannes,Melega, William P.,Silverman, Daniel H. S.

, p. 635 - 643 (2005)

A fluorine-18 labeled analog of the widely used chemotherapeutic agent cyclophosphamide was synthesized as a tracer for prognostic imaging with positron emission tomography. 2-[(2-Chloro-2′-[18F]fluoroethyl) amino]-2H-1,3,2-oxazaphosphorinane-2-oxide (18F- fluorocyclophosphamide), was prepared by direct halogen exchange reaction from the parent cyclophosphamide. In small-scale syntheses, radiochemical yields of up to 4.9% and specific activities of 960 Ci/mmol were achieved in a total synthesis time of 60-75 min. The [18F]-labeled cyclophosphamide analog with radioactive purity >99% and chemical purity >96% was suitable for in vivo (microPET imaging) and ex vivo studies of a murine model of human breast tumors. Copyright

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