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918896-64-7

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918896-64-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 918896-64-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,8,8,9 and 6 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 918896-64:
(8*9)+(7*1)+(6*8)+(5*8)+(4*9)+(3*6)+(2*6)+(1*4)=237
237 % 10 = 7
So 918896-64-7 is a valid CAS Registry Number.

918896-64-7Downstream Products

918896-64-7Relevant articles and documents

Synthetic studies on Ecteinascidin-743: synthesis of building blocks through Sharpless asymmetric dihydroxylation and aza-Michael reactions

Chandrasekhar,Reddy, N. Ramakrishna,Rao, Y. Srinivasa

, p. 12098 - 12107 (2007/10/03)

A practical and an efficient synthesis of three building blocks of tetrahydroisoquinoline alkaloid Ecteinascidin-743 was accomplished, starting from readily available piperonal, 2-methyl anisole, and veratraldehyde. A combination of Vilsmeier-Haack reaction and Sharpless asymmetric dihydroxylation was employed for the synthesis of building blocks A and B whereas a Heck reaction in PEG-2000 and aza-Michael reactions were employed for the synthesis of building block C.

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