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68241-78-1

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68241-78-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 68241-78-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,2,4 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 68241-78:
(7*6)+(6*8)+(5*2)+(4*4)+(3*1)+(2*7)+(1*8)=141
141 % 10 = 1
So 68241-78-1 is a valid CAS Registry Number.

68241-78-1Relevant articles and documents

Small-scale procedure for acid-catalyzed ketal formation

Wright, Austin C.,Du, Yun Emily,Stoltz, Brian M.

, p. 11258 - 11260 (2019)

A modified procedure for dehydrative ketal protections is disclosed, which serves as an alternative to the classic Dean-Stark protocol. Studies show that this new procedure can outperform the Dean-Stark apparatus on small scales and thus serves as a complementary approach to effect dehydrative ketalizations. A detailed procedure for this apparatus is presented.

Enantioselective construction of the tricyclic core of curcusones A-D: Via a cross-electrophile coupling approach

Wright, Austin C.,Stoltz, Brian M.

, p. 10562 - 10565 (2019/12/02)

Herein we report our recent progress toward the enantioselective total synthesis of the diterpenoid natural products curcusones A-D by means of complementary Stetter annulation or ring-closing metathesis (RCM) disconnections. Using the latter approach, we

Synthesis and stereochemical confirmation of the secoiridoid glucosides nudiflosides D and A

Hanessian, Stephen,Mainetti, Emily,Lecomte, Fabien

, p. 4047 - 4049 (2007/10/03)

We describe herein an efficient access to the highly substituted cyclopentane unit present in the Nudifloside secoiridoid family via crotyl phosphonamide anion mediated conjugate addition to cyclopentenone.

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