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37552-68-4

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37552-68-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 37552-68-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,5,5 and 2 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 37552-68:
(7*3)+(6*7)+(5*5)+(4*5)+(3*2)+(2*6)+(1*8)=134
134 % 10 = 4
So 37552-68-4 is a valid CAS Registry Number.

37552-68-4Downstream Products

37552-68-4Relevant articles and documents

Ytterbium(III) triflate-catalyzed stereoselective synthesis of β-lactams via [2 + 2] cyclocondensation in ionic liquid

Chen, Rener,Yang, Bingjian,Su, Weike

, p. 3167 - 3174 (2006)

Catalyzed by ytterbium(III) triflate [Yb(OTf)3], β-lactams were stereoselectively synthesized from imines and acetyl chlorides in ionic liquid under mild conditions. The ionic liquid and catalyst could be recycled and reused as opposed to tradi

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