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176652-03-2

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176652-03-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 176652-03-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,6,5 and 2 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 176652-03:
(8*1)+(7*7)+(6*6)+(5*6)+(4*5)+(3*2)+(2*0)+(1*3)=152
152 % 10 = 2
So 176652-03-2 is a valid CAS Registry Number.

176652-03-2Relevant articles and documents

Unprecedented synthesis of 1,2,3-triazolo-cinnolinone via Sonogashira coupling and intramolecular cyclization

Kumar, Avnish,Tiwari, Dharmendra Kumar,Sridhar, Balasubramanian,Likhar, Pravin R.

, p. 4840 - 4848 (2018)

An unprecedented copper mediated one-pot sequential synthesis of 1,2,3-triazolo cinnolinone derivatives from 2-halo-phenyl triazoles and terminal alkynes has been reported. Under the optimized reaction conditions, a broad range of substituted triazoles and alkynes were found to participate in this transformation, thus affording unknown 1,2,3-triazolo cinnolinone derivatives in moderate to excellent yields. This method proceeds through sequential C-C coupling followed by an annulation cascade sequence in the same vessel under atmospheric air as the sole oxidant, thus representing a simple, efficient and atom economical approach for the synthesis of aza-cinnolinones.

Synthesis of I-125 labeled photoaffinity rapamycin analogs

Shu, Arthur Y.L.,Yamashita, Dennis S.,Holt, Dennis A.,Heys, J. Richard

, p. 227 - 237 (2007/10/03)

Two no-carrier-added 125I-labeled photoaffinity rapamycin analogs were prepared: 7-demethoxy-7-(4-azido-3-125I-benzyloxy)rapamycin (2) and its C28-C29 seco analog 3. The key reactions of the synthesis were subst

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