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903907-90-4

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903907-90-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 903907-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,3,9,0 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 903907-90:
(8*9)+(7*0)+(6*3)+(5*9)+(4*0)+(3*7)+(2*9)+(1*0)=174
174 % 10 = 4
So 903907-90-4 is a valid CAS Registry Number.

903907-90-4Relevant articles and documents

Ring-closing metathesis-based synthesis of (3R,4R,5S)-4-acetylamino-5- amino-3-hydroxy-cyclohex-1-ene-carboxylic acid ethyl ester: A functionalized cycloalkene skeleton of GS4104

Cong, Xin,Yao, Zhu-Jun

, p. 5365 - 5368 (2007/10/03)

(3R,4R,5S)-4-Acetylamino-5-amino-3-hydroxy-cyclohex-1-ene-carboxylic acid ethyl ester, a functionalized cyclohexene skeleton of GS4104, was diastereoselectively synthesized. A major advantage of this synthesis is the use of readily available L-serine to r

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