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29669-41-8

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29669-41-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29669-41-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,6,6 and 9 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 29669-41:
(7*2)+(6*9)+(5*6)+(4*6)+(3*9)+(2*4)+(1*1)=158
158 % 10 = 8
So 29669-41-8 is a valid CAS Registry Number.

29669-41-8Relevant articles and documents

Polycyclic N-heterocyclic compounds. Part 631 improved synthesis of 5-amino-1,2-dihydrofuro[2,3-c]isoquinolines via truce-smiles rearrangement and subsequent formation to furo[2,3-c]isoquinoline

Okuda, Kensuke,Yoshida, Masahiko,Hirota, Takashi,Sasaki, Kenji

experimental part, p. 363 - 368 (2011/02/23)

An improved synthesis of 5-amino-1,2-dihydrofuro[2,3-c]isoquinoline has been achieved using a slight modification of reaction conditions for the Truce-Smiles rearrangement. Acid treatment of the obtained 5-amino-1,2- dihydrofuro[2,3-c]isoquinolines gave unexpected ring-opened spiro ring compounds. The previously unreported parent compound, furo[2,3-c]isoquinoline, was also synthesized.

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