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1158-23-2

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1158-23-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1158-23-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,5 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1158-23:
(6*1)+(5*1)+(4*5)+(3*8)+(2*2)+(1*3)=62
62 % 10 = 2
So 1158-23-2 is a valid CAS Registry Number.

1158-23-2Relevant articles and documents

A facile method for the preparation of carbodiimides from thioureas and (Boc)2O

Wu, He,Sun, Yan-Fang,Zhang, Chen,Miao, Chun-Bao,Yang, Hai-Tao

, p. 739 - 742 (2018)

A concise method for the preparation of carbodiimides from thioureas using di-tert-butyl dicarbonate [(Boc)2O] as the dehydrosulfurizative reagent has been developed. Using DMAP as the catalyst, a variety of symmetric and asymmetric 1,3-diaryl thioureas were converted into the corresponding carbodiimides efficiently in a short time.

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