Pharmaceutical Intermediates

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N-(2-Chloro-4-hydroxyphenyl)-N'-cyclopropyl-urea

Product Name: N-(2-Chloro-4-hydroxyphenyl)-N'-cyclopropyl-urea
CAS Number: 796848-79-8
Purity: 99.0%
Product Category: Intermediate

Synonyms:

  • 1-(2-Chloro-4-hydroxyphenyl)-3-cyclopropylurea

  • Lenvatinib intermediate

  • Lenvatinib impurity A

  • N-(2-Chloro-4-hydroxyphenyl)-N'-cyclopropylcarbamimidic acid

Molecular Formula: C10H11ClN2O2
Molecular Weight: 226.66

Keywords:
796848-79-8; Lenvatinib intermediate; 205448-65-3; 205448-66-4; 857890-39-2; 417716-92-8

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N-Acetyl-L-cysteinamide

Chinese Name: N-乙酰-L-胱氨酸
English Name: N-Acetyl-L-cysteinamide
CAS: 38520-57-9
Purity Specification: 99.0%
Product Category: Intermediate

English Name: N-Acetyl-L-cysteinamide
Alias: N-Acetylcysteine amide
Product Name: N-乙酰基-L-半胱氨酰胺

Molecular Formula: C₅H₁₀N₂O₂S
Molecular Weight: 162.21
CAS Registration Number: 38520-57-9

Keywords: 38520-57-9; N-乙酰-L-胱氨酸; N-Acetyl-L-cysteinamide

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N-Acetyl-L-Cysteine Methyl Ester

Chinese Name: N-乙酰基-L-半胱氨酸甲酯
English Name: N-Acetyl-L-Cysteine Methyl Ester
CAS: 7652-46-2
Purity Specification: 98.0%
Product Category: Intermediate

CAS Registration Number: 7652-46-2
Product Name: N-Acetyl-L-Cysteine Methyl Ester
Melting Point: 77-81°C
Boiling Point: 326.4±32.0°C (Predicted)
Density: 1.170±0.06 g/cm³ (Predicted)
Storage Conditions: Under inert gas (nitrogen or argon) at 2-8°C
Solubility: Chloroform (Sparingly), Methanol (Slightly)

Keywords: 7652-46-2; N-Acetyl-L-Cysteine Methyl Ester; N-Acetyl-L-Cysteine; 38520-57-9

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N-methylsulfamide

Chinese Name: N-甲基-磺酰胺
English Name: N-methylsulfamide
CAS: 72179-84-1
Purity Specification: 98.0%
Product Category: Intermediate

English Name: N-methylsulfamide
Product Name: N-甲基-磺酰胺; (甲基氨磺酰基)胺; N-甲基氨基磺酰胺

Molecular Structure: (Not provided)

Molecular Formula: CH₆N₂O₂S
Molecular Weight: 110.14
CAS Registration Number: 72179-84-1

Application: N-methylsulfamide is widely used in the synthesis of natural products, fine chemicals, pharmaceuticals, and key intermediates. It is an important intermediate in the production of the antihyperlipidemic drug rosuvastatin calcium. Rosuvastatin calcium is a selective HMG-CoA reductase inhibitor developed by AstraZeneca and is marketed under the brand name "CRESTOR" in the United States, Japan, Europe, and China. It is produced by companies such as Nanjing Xiansheng, Lunan Better, and Zhongda Tianqing, which are approved by the National Medical Products Administration in China.

Keywords: 72179-84-1

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N'-((Dimethylamino)methylene)-N,N-dimethylformohydrazonamidedihydrochloride

Chinese Name: N'-((二甲基氨基)甲基)-N,N-二甲基甲腙盐酸盐
English Name: N'-((Dimethylamino)methylene)-N,N-dimethylformohydrazonamide dihydrochloride
CAS: 16227-06-8
Purity Specification: 98.0%
Product Category: Intermediate

Chinese Synonyms: N'-((二甲基氨基)甲基)-N,N-二甲基甲腙盐酸盐; 1,2-二[(二甲基氨基)亚甲基]肼二盐酸盐; N'-((二甲基氨基)甲基)-N,N-二甲基甲腙二盐酸盐

English Synonyms: N'-((Dimethylamino)methylene)-N,N-dimethylformohydrazonamide dihydrochloride; Methanehydrazonamide, N'-[(dimethylamino)methylene]-N,N-dimethyl-, hydrochloride(1:2)

CAS Number: 16227-06-8
Molecular Formula: C6H16Cl2N4
Molecular Weight: 215.12404

Keywords: 16227-06-8; N'-((Dimethylamino)methylene)-N,N-dimethyl-

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N1,N2-bis(4-hydroxy-2,6-dimethylphenyl)oxalamide

Chinese Name: N1,N2-双(4-羟基-2,6-二甲基苯基)草酰胺 (for reference only, please refer to the English name as official)
English Name: N1,N2-bis(4-hydroxy-2,6-dimethylphenyl)oxalamide
CAS: 1809288-95-6
Purity Specification: 98.0%
Product Category: Intermediate

Molecular Formula: C₁₈H₂₀N₂O₄
Molecular Weight: 328.36

Keywords: 1809288-95-6; copper-catalyzed hydrolysis ligand

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