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170508-51-7

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170508-51-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170508-51-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,5,0 and 8 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 170508-51:
(8*1)+(7*7)+(6*0)+(5*5)+(4*0)+(3*8)+(2*5)+(1*1)=117
117 % 10 = 7
So 170508-51-7 is a valid CAS Registry Number.

170508-51-7Relevant articles and documents

Synthesis of Oxochlorins from the Red Blood Pigment Heme and Their Transformation into Potentially Biologically Active Chlorin Derivatives

Bats, Jan W.,Haake, Gerold,Meier, Axel,Montforts, Franz-Peter,Scheurich, Gerhard

, p. 1617 - 1632 (2007/10/02)

The hydrochlorin rac-3 was prepared from the readily accessible chlorins rac-5a, b.The alcohol function of rac-3 could be used to attach an estrogen residue 28 and the hydroquinone 19 to yield the chlorin estrogen ethers 32a, b and the chlorin hydroquinone ether rac-30 respectively.The prepared chlorin estrogen derivatives might be useful as sensitizers and fluorescence markers for photodynamic therapy and other diagnostic/therapeutic applications.The chlorin hydroquinone ether is of interest as a potential artificial photosynthesis system, which contains a "natural" chlorin as a structural subunit in contrast to previously synthesized model systems based on porphyrins. - Keywords: Porphyrins / Chlorins / Estradiols / Quinones / Tumor therapy, photodynamic

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